diff mbox series

[2/7] drbd: Add peer device parameter to whole-bitmap I/O handlers

Message ID 20230215163204.2856631-3-christoph.boehmwalder@linbit.com (mailing list archive)
State New, archived
Headers show
Series Assorted DRBD refactoring | expand

Commit Message

Christoph Böhmwalder Feb. 15, 2023, 4:31 p.m. UTC
From: Andreas Gruenbacher <agruen@kernel.org>

Pass a peer device parameter through the bitmap I/O functions to the I/O
handlers.  In after_state_ch(), set that parameter when queuing the
drbd_send_bitmap operation so that this operation knows where to send the
bitmap.

Signed-off-by: Andreas Gruenbacher <agruen@kernel.org>
Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
---
 drivers/block/drbd/drbd_bitmap.c   |  7 ++--
 drivers/block/drbd/drbd_int.h      | 23 ++++++++-----
 drivers/block/drbd/drbd_main.c     | 55 ++++++++++++++++++------------
 drivers/block/drbd/drbd_nl.c       | 14 ++++----
 drivers/block/drbd/drbd_receiver.c |  6 ++--
 drivers/block/drbd/drbd_state.c    |  7 ++--
 6 files changed, 67 insertions(+), 45 deletions(-)

Comments

kernel test robot Feb. 15, 2023, 6:46 p.m. UTC | #1
Hi Christoph,

I love your patch! Perhaps something to improve:

[auto build test WARNING on a06377c5d01eeeaa52ad979b62c3c72efcc3eff0]

url:    https://github.com/intel-lab-lkp/linux/commits/Christoph-B-hmwalder/drbd-Rip-out-the-ERR_IF_CNT_IS_NEGATIVE-macro/20230216-003454
base:   a06377c5d01eeeaa52ad979b62c3c72efcc3eff0
patch link:    https://lore.kernel.org/r/20230215163204.2856631-3-christoph.boehmwalder%40linbit.com
patch subject: [PATCH 2/7] drbd: Add peer device parameter to whole-bitmap I/O handlers
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20230216/202302160243.r4vaCKlw-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/e55221e8a69f80303803dab7e079bff7b698ea02
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Christoph-B-hmwalder/drbd-Rip-out-the-ERR_IF_CNT_IS_NEGATIVE-macro/20230216-003454
        git checkout e55221e8a69f80303803dab7e079bff7b698ea02
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash drivers/block/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302160243.r4vaCKlw-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/linux/drbd_genl_api.h:54,
                    from drivers/block/drbd/drbd_int.h:35,
                    from drivers/block/drbd/drbd_nl.c:24:
   include/linux/drbd_genl_api.h:51:33: warning: no previous prototype for 'drbd_genl_cmd_to_str' [-Wmissing-prototypes]
      51 | #define GENL_MAGIC_FAMILY       drbd
         |                                 ^~~~
   include/linux/genl_magic_struct.h:20:25: note: in definition of macro 'CONCAT__'
      20 | #define CONCAT__(a,b)   a ## b
         |                         ^
   include/linux/genl_magic_func.h:212:13: note: in expansion of macro 'CONCAT_'
     212 | const char *CONCAT_(GENL_MAGIC_FAMILY, _genl_cmd_to_str)(__u8 cmd)
         |             ^~~~~~~
   include/linux/genl_magic_func.h:212:21: note: in expansion of macro 'GENL_MAGIC_FAMILY'
     212 | const char *CONCAT_(GENL_MAGIC_FAMILY, _genl_cmd_to_str)(__u8 cmd)
         |                     ^~~~~~~~~~~~~~~~~
   drivers/block/drbd/drbd_nl.c: In function 'drbd_determine_dev_size':
>> drivers/block/drbd/drbd_nl.c:1055:70: warning: pointer type mismatch in conditional expression
    1055 |                 drbd_bitmap_io(device, md_moved ? &drbd_bm_write_all : &drbd_bm_write,
         |                                                                      ^
   drivers/block/drbd/drbd_nl.c:1055:17: error: too many arguments to function 'drbd_bitmap_io'
    1055 |                 drbd_bitmap_io(device, md_moved ? &drbd_bm_write_all : &drbd_bm_write,
         |                 ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1072:12: note: declared here
    1072 | extern int drbd_bitmap_io(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_nl.c: In function 'drbd_adm_attach':
   drivers/block/drbd/drbd_nl.c:2029:21: error: too many arguments to function 'drbd_bitmap_io'
    2029 |                 if (drbd_bitmap_io(device, &drbd_bmio_set_n_write,
         |                     ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1072:12: note: declared here
    1072 | extern int drbd_bitmap_io(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_nl.c:2036:21: error: too many arguments to function 'drbd_bitmap_io'
    2036 |                 if (drbd_bitmap_io(device, &drbd_bm_read,
         |                     ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1072:12: note: declared here
    1072 | extern int drbd_bitmap_io(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_nl.c: In function 'drbd_adm_invalidate':
   drivers/block/drbd/drbd_nl.c:2976:29: error: too many arguments to function 'drbd_bitmap_io'
    2976 |                         if (drbd_bitmap_io(device, &drbd_bmio_set_n_write,
         |                             ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1072:12: note: declared here
    1072 | extern int drbd_bitmap_io(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_nl.c: In function 'drbd_bmio_set_susp_al':
   drivers/block/drbd/drbd_nl.c:3014:14: error: too few arguments to function 'drbd_bmio_set_n_write'
    3014 |         rv = drbd_bmio_set_n_write(device);
         |              ^~~~~~~~~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1078:12: note: declared here
    1078 | extern int drbd_bmio_set_n_write(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~~~~~~~~
   drivers/block/drbd/drbd_nl.c: In function 'drbd_adm_invalidate_peer':
   drivers/block/drbd/drbd_nl.c:3055:52: error: passing argument 2 of 'drbd_bitmap_io' from incompatible pointer type [-Werror=incompatible-pointer-types]
    3055 |                         if (drbd_bitmap_io(device, &drbd_bmio_set_susp_al,
         |                                                    ^~~~~~~~~~~~~~~~~~~~~~
         |                                                    |
         |                                                    int (*)(struct drbd_device *)
   drivers/block/drbd/drbd_int.h:1073:23: note: expected 'int (*)(struct drbd_device *, struct drbd_peer_device *)' but argument is of type 'int (*)(struct drbd_device *)'
    1073 |                 int (*io_fn)(struct drbd_device *, struct drbd_peer_device *),
         |                 ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/block/drbd/drbd_nl.c:3055:29: error: too many arguments to function 'drbd_bitmap_io'
    3055 |                         if (drbd_bitmap_io(device, &drbd_bmio_set_susp_al,
         |                             ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1072:12: note: declared here
    1072 | extern int drbd_bitmap_io(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_nl.c: In function 'drbd_adm_new_c_uuid':
   drivers/block/drbd/drbd_nl.c:4152:23: error: too many arguments to function 'drbd_bitmap_io'
    4152 |                 err = drbd_bitmap_io(device, &drbd_bmio_clear_n_write,
         |                       ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1072:12: note: declared here
    1072 | extern int drbd_bitmap_io(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +1055 drivers/block/drbd/drbd_nl.c

b411b3637fa71f Philipp Reisner     2009-09-25   921  
a425711c6c9c85 Lee Jones           2021-03-12   922  /*
b411b3637fa71f Philipp Reisner     2009-09-25   923   * drbd_determine_dev_size() -  Sets the right device size obeying all constraints
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03   924   * @device:	DRBD device.
b411b3637fa71f Philipp Reisner     2009-09-25   925   *
b411b3637fa71f Philipp Reisner     2009-09-25   926   * Returns 0 on success, negative return values indicate errors.
b411b3637fa71f Philipp Reisner     2009-09-25   927   * You should call drbd_md_sync() after calling this function.
b411b3637fa71f Philipp Reisner     2009-09-25   928   */
d752b2696072ed Philipp Reisner     2013-06-25   929  enum determine_dev_size
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03   930  drbd_determine_dev_size(struct drbd_device *device, enum dds_flags flags, struct resize_parms *rs) __must_hold(local)
b411b3637fa71f Philipp Reisner     2009-09-25   931  {
8011e2490907c2 Lars Ellenberg      2015-06-08   932  	struct md_offsets_and_sizes {
8011e2490907c2 Lars Ellenberg      2015-06-08   933  		u64 last_agreed_sect;
8011e2490907c2 Lars Ellenberg      2015-06-08   934  		u64 md_offset;
8011e2490907c2 Lars Ellenberg      2015-06-08   935  		s32 al_offset;
8011e2490907c2 Lars Ellenberg      2015-06-08   936  		s32 bm_offset;
8011e2490907c2 Lars Ellenberg      2015-06-08   937  		u32 md_size_sect;
8011e2490907c2 Lars Ellenberg      2015-06-08   938  
8011e2490907c2 Lars Ellenberg      2015-06-08   939  		u32 al_stripes;
8011e2490907c2 Lars Ellenberg      2015-06-08   940  		u32 al_stripe_size_4k;
8011e2490907c2 Lars Ellenberg      2015-06-08   941  	} prev;
8011e2490907c2 Lars Ellenberg      2015-06-08   942  	sector_t u_size, size;
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03   943  	struct drbd_md *md = &device->ldev->md;
d752b2696072ed Philipp Reisner     2013-06-25   944  	void *buffer;
b411b3637fa71f Philipp Reisner     2009-09-25   945  
b411b3637fa71f Philipp Reisner     2009-09-25   946  	int md_moved, la_size_changed;
e96c96333fe5a4 Philipp Reisner     2013-06-25   947  	enum determine_dev_size rv = DS_UNCHANGED;
b411b3637fa71f Philipp Reisner     2009-09-25   948  
5f7c01249bea67 Lars Ellenberg      2015-06-08   949  	/* We may change the on-disk offsets of our meta data below.  Lock out
5f7c01249bea67 Lars Ellenberg      2015-06-08   950  	 * anything that may cause meta data IO, to avoid acting on incomplete
5f7c01249bea67 Lars Ellenberg      2015-06-08   951  	 * layout changes or scribbling over meta data that is in the process
5f7c01249bea67 Lars Ellenberg      2015-06-08   952  	 * of being moved.
b411b3637fa71f Philipp Reisner     2009-09-25   953  	 *
5f7c01249bea67 Lars Ellenberg      2015-06-08   954  	 * Move is not exactly correct, btw, currently we have all our meta
5f7c01249bea67 Lars Ellenberg      2015-06-08   955  	 * data in core memory, to "move" it we just write it all out, there
5f7c01249bea67 Lars Ellenberg      2015-06-08   956  	 * are no reads. */
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03   957  	drbd_suspend_io(device);
e37d2438d8e5e4 Lars Ellenberg      2014-04-01   958  	buffer = drbd_md_get_buffer(device, __func__); /* Lock meta-data IO */
d752b2696072ed Philipp Reisner     2013-06-25   959  	if (!buffer) {
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03   960  		drbd_resume_io(device);
d752b2696072ed Philipp Reisner     2013-06-25   961  		return DS_ERROR;
d752b2696072ed Philipp Reisner     2013-06-25   962  	}
b411b3637fa71f Philipp Reisner     2009-09-25   963  
8011e2490907c2 Lars Ellenberg      2015-06-08   964  	/* remember current offset and sizes */
8011e2490907c2 Lars Ellenberg      2015-06-08   965  	prev.last_agreed_sect = md->la_size_sect;
8011e2490907c2 Lars Ellenberg      2015-06-08   966  	prev.md_offset = md->md_offset;
8011e2490907c2 Lars Ellenberg      2015-06-08   967  	prev.al_offset = md->al_offset;
8011e2490907c2 Lars Ellenberg      2015-06-08   968  	prev.bm_offset = md->bm_offset;
8011e2490907c2 Lars Ellenberg      2015-06-08   969  	prev.md_size_sect = md->md_size_sect;
8011e2490907c2 Lars Ellenberg      2015-06-08   970  	prev.al_stripes = md->al_stripes;
8011e2490907c2 Lars Ellenberg      2015-06-08   971  	prev.al_stripe_size_4k = md->al_stripe_size_4k;
b411b3637fa71f Philipp Reisner     2009-09-25   972  
d752b2696072ed Philipp Reisner     2013-06-25   973  	if (rs) {
d752b2696072ed Philipp Reisner     2013-06-25   974  		/* rs is non NULL if we should change the AL layout only */
d752b2696072ed Philipp Reisner     2013-06-25   975  		md->al_stripes = rs->al_stripes;
d752b2696072ed Philipp Reisner     2013-06-25   976  		md->al_stripe_size_4k = rs->al_stripe_size / 4;
d752b2696072ed Philipp Reisner     2013-06-25   977  		md->al_size_4k = (u64)rs->al_stripes * rs->al_stripe_size / 4;
d752b2696072ed Philipp Reisner     2013-06-25   978  	}
d752b2696072ed Philipp Reisner     2013-06-25   979  
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03   980  	drbd_md_set_sector_offsets(device, device->ldev);
b411b3637fa71f Philipp Reisner     2009-09-25   981  
daeda1cca91d58 Philipp Reisner     2011-05-03   982  	rcu_read_lock();
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03   983  	u_size = rcu_dereference(device->ldev->disk_conf)->disk_size;
daeda1cca91d58 Philipp Reisner     2011-05-03   984  	rcu_read_unlock();
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03   985  	size = drbd_new_dev_size(device, device->ldev, u_size, flags & DDSF_FORCED);
b411b3637fa71f Philipp Reisner     2009-09-25   986  
8011e2490907c2 Lars Ellenberg      2015-06-08   987  	if (size < prev.last_agreed_sect) {
d752b2696072ed Philipp Reisner     2013-06-25   988  		if (rs && u_size == 0) {
d752b2696072ed Philipp Reisner     2013-06-25   989  			/* Remove "rs &&" later. This check should always be active, but
d752b2696072ed Philipp Reisner     2013-06-25   990  			   right now the receiver expects the permissive behavior */
d01801710265cf Andreas Gruenbacher 2011-07-03   991  			drbd_warn(device, "Implicit shrink not allowed. "
d752b2696072ed Philipp Reisner     2013-06-25   992  				 "Use --size=%llus for explicit shrink.\n",
d752b2696072ed Philipp Reisner     2013-06-25   993  				 (unsigned long long)size);
d752b2696072ed Philipp Reisner     2013-06-25   994  			rv = DS_ERROR_SHRINK;
d752b2696072ed Philipp Reisner     2013-06-25   995  		}
d752b2696072ed Philipp Reisner     2013-06-25   996  		if (u_size > size)
d752b2696072ed Philipp Reisner     2013-06-25   997  			rv = DS_ERROR_SPACE_MD;
d752b2696072ed Philipp Reisner     2013-06-25   998  		if (rv != DS_UNCHANGED)
d752b2696072ed Philipp Reisner     2013-06-25   999  			goto err_out;
d752b2696072ed Philipp Reisner     2013-06-25  1000  	}
d752b2696072ed Philipp Reisner     2013-06-25  1001  
155bd9d1abd604 Christoph Hellwig   2020-09-25  1002  	if (get_capacity(device->vdisk) != size ||
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  1003  	    drbd_bm_capacity(device) != size) {
b411b3637fa71f Philipp Reisner     2009-09-25  1004  		int err;
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  1005  		err = drbd_bm_resize(device, size, !(flags & DDSF_NO_RESYNC));
b411b3637fa71f Philipp Reisner     2009-09-25  1006  		if (unlikely(err)) {
b411b3637fa71f Philipp Reisner     2009-09-25  1007  			/* currently there is only one error: ENOMEM! */
8011e2490907c2 Lars Ellenberg      2015-06-08  1008  			size = drbd_bm_capacity(device);
b411b3637fa71f Philipp Reisner     2009-09-25  1009  			if (size == 0) {
d01801710265cf Andreas Gruenbacher 2011-07-03  1010  				drbd_err(device, "OUT OF MEMORY! "
b411b3637fa71f Philipp Reisner     2009-09-25  1011  				    "Could not allocate bitmap!\n");
b411b3637fa71f Philipp Reisner     2009-09-25  1012  			} else {
d01801710265cf Andreas Gruenbacher 2011-07-03  1013  				drbd_err(device, "BM resizing failed. "
8011e2490907c2 Lars Ellenberg      2015-06-08  1014  				    "Leaving size unchanged\n");
b411b3637fa71f Philipp Reisner     2009-09-25  1015  			}
e96c96333fe5a4 Philipp Reisner     2013-06-25  1016  			rv = DS_ERROR;
b411b3637fa71f Philipp Reisner     2009-09-25  1017  		}
b411b3637fa71f Philipp Reisner     2009-09-25  1018  		/* racy, see comments above. */
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  1019  		drbd_set_my_capacity(device, size);
8011e2490907c2 Lars Ellenberg      2015-06-08  1020  		md->la_size_sect = size;
b411b3637fa71f Philipp Reisner     2009-09-25  1021  	}
d752b2696072ed Philipp Reisner     2013-06-25  1022  	if (rv <= DS_ERROR)
d752b2696072ed Philipp Reisner     2013-06-25  1023  		goto err_out;
b411b3637fa71f Philipp Reisner     2009-09-25  1024  
8011e2490907c2 Lars Ellenberg      2015-06-08  1025  	la_size_changed = (prev.last_agreed_sect != md->la_size_sect);
b411b3637fa71f Philipp Reisner     2009-09-25  1026  
8011e2490907c2 Lars Ellenberg      2015-06-08  1027  	md_moved = prev.md_offset    != md->md_offset
8011e2490907c2 Lars Ellenberg      2015-06-08  1028  		|| prev.md_size_sect != md->md_size_sect;
b411b3637fa71f Philipp Reisner     2009-09-25  1029  
d752b2696072ed Philipp Reisner     2013-06-25  1030  	if (la_size_changed || md_moved || rs) {
d752b2696072ed Philipp Reisner     2013-06-25  1031  		u32 prev_flags;
24dccabb390412 Andreas Gruenbacher 2010-12-12  1032  
fcb096740a13c8 Lars Ellenberg      2014-01-27  1033  		/* We do some synchronous IO below, which may take some time.
fcb096740a13c8 Lars Ellenberg      2014-01-27  1034  		 * Clear the timer, to avoid scary "timer expired!" messages,
fcb096740a13c8 Lars Ellenberg      2014-01-27  1035  		 * "Superblock" is written out at least twice below, anyways. */
fcb096740a13c8 Lars Ellenberg      2014-01-27  1036  		del_timer(&device->md_sync_timer);
d752b2696072ed Philipp Reisner     2013-06-25  1037  
5f7c01249bea67 Lars Ellenberg      2015-06-08  1038  		/* We won't change the "al-extents" setting, we just may need
5f7c01249bea67 Lars Ellenberg      2015-06-08  1039  		 * to move the on-disk location of the activity log ringbuffer.
5f7c01249bea67 Lars Ellenberg      2015-06-08  1040  		 * Lock for transaction is good enough, it may well be "dirty"
5f7c01249bea67 Lars Ellenberg      2015-06-08  1041  		 * or even "starving". */
5f7c01249bea67 Lars Ellenberg      2015-06-08  1042  		wait_event(device->al_wait, lc_try_lock_for_transaction(device->act_log));
5f7c01249bea67 Lars Ellenberg      2015-06-08  1043  
5f7c01249bea67 Lars Ellenberg      2015-06-08  1044  		/* mark current on-disk bitmap and activity log as unreliable */
d752b2696072ed Philipp Reisner     2013-06-25  1045  		prev_flags = md->flags;
5f7c01249bea67 Lars Ellenberg      2015-06-08  1046  		md->flags |= MDF_FULL_SYNC | MDF_AL_DISABLED;
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  1047  		drbd_md_write(device, buffer);
d752b2696072ed Philipp Reisner     2013-06-25  1048  
5f7c01249bea67 Lars Ellenberg      2015-06-08  1049  		drbd_al_initialize(device, buffer);
5f7c01249bea67 Lars Ellenberg      2015-06-08  1050  
d01801710265cf Andreas Gruenbacher 2011-07-03  1051  		drbd_info(device, "Writing the whole bitmap, %s\n",
b411b3637fa71f Philipp Reisner     2009-09-25  1052  			 la_size_changed && md_moved ? "size changed and md moved" :
b411b3637fa71f Philipp Reisner     2009-09-25  1053  			 la_size_changed ? "size changed" : "md moved");
20ceb2b22edaf5 Lars Ellenberg      2011-01-21  1054  		/* next line implicitly does drbd_suspend_io()+drbd_resume_io() */
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03 @1055  		drbd_bitmap_io(device, md_moved ? &drbd_bm_write_all : &drbd_bm_write,
e55221e8a69f80 Andreas Gruenbacher 2023-02-15  1056  			       "size changed", BM_LOCKED_MASK, NULL);
d752b2696072ed Philipp Reisner     2013-06-25  1057  
5f7c01249bea67 Lars Ellenberg      2015-06-08  1058  		/* on-disk bitmap and activity log is authoritative again
5f7c01249bea67 Lars Ellenberg      2015-06-08  1059  		 * (unless there was an IO error meanwhile...) */
d752b2696072ed Philipp Reisner     2013-06-25  1060  		md->flags = prev_flags;
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  1061  		drbd_md_write(device, buffer);
d752b2696072ed Philipp Reisner     2013-06-25  1062  
d752b2696072ed Philipp Reisner     2013-06-25  1063  		if (rs)
d01801710265cf Andreas Gruenbacher 2011-07-03  1064  			drbd_info(device, "Changed AL layout to al-stripes = %d, al-stripe-size-kB = %d\n",
d752b2696072ed Philipp Reisner     2013-06-25  1065  				  md->al_stripes, md->al_stripe_size_4k * 4);
b411b3637fa71f Philipp Reisner     2009-09-25  1066  	}
b411b3637fa71f Philipp Reisner     2009-09-25  1067  
8011e2490907c2 Lars Ellenberg      2015-06-08  1068  	if (size > prev.last_agreed_sect)
8011e2490907c2 Lars Ellenberg      2015-06-08  1069  		rv = prev.last_agreed_sect ? DS_GREW : DS_GREW_FROM_ZERO;
8011e2490907c2 Lars Ellenberg      2015-06-08  1070  	if (size < prev.last_agreed_sect)
e96c96333fe5a4 Philipp Reisner     2013-06-25  1071  		rv = DS_SHRUNK;
d752b2696072ed Philipp Reisner     2013-06-25  1072  
d752b2696072ed Philipp Reisner     2013-06-25  1073  	if (0) {
d752b2696072ed Philipp Reisner     2013-06-25  1074  	err_out:
8011e2490907c2 Lars Ellenberg      2015-06-08  1075  		/* restore previous offset and sizes */
8011e2490907c2 Lars Ellenberg      2015-06-08  1076  		md->la_size_sect = prev.last_agreed_sect;
8011e2490907c2 Lars Ellenberg      2015-06-08  1077  		md->md_offset = prev.md_offset;
8011e2490907c2 Lars Ellenberg      2015-06-08  1078  		md->al_offset = prev.al_offset;
8011e2490907c2 Lars Ellenberg      2015-06-08  1079  		md->bm_offset = prev.bm_offset;
8011e2490907c2 Lars Ellenberg      2015-06-08  1080  		md->md_size_sect = prev.md_size_sect;
8011e2490907c2 Lars Ellenberg      2015-06-08  1081  		md->al_stripes = prev.al_stripes;
8011e2490907c2 Lars Ellenberg      2015-06-08  1082  		md->al_stripe_size_4k = prev.al_stripe_size_4k;
8011e2490907c2 Lars Ellenberg      2015-06-08  1083  		md->al_size_4k = (u64)prev.al_stripes * prev.al_stripe_size_4k;
d752b2696072ed Philipp Reisner     2013-06-25  1084  	}
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  1085  	lc_unlock(device->act_log);
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  1086  	wake_up(&device->al_wait);
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  1087  	drbd_md_put_buffer(device);
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  1088  	drbd_resume_io(device);
b411b3637fa71f Philipp Reisner     2009-09-25  1089  
b411b3637fa71f Philipp Reisner     2009-09-25  1090  	return rv;
b411b3637fa71f Philipp Reisner     2009-09-25  1091  }
b411b3637fa71f Philipp Reisner     2009-09-25  1092
kernel test robot Feb. 15, 2023, 8:38 p.m. UTC | #2
Hi Christoph,

I love your patch! Yet something to improve:

[auto build test ERROR on a06377c5d01eeeaa52ad979b62c3c72efcc3eff0]

url:    https://github.com/intel-lab-lkp/linux/commits/Christoph-B-hmwalder/drbd-Rip-out-the-ERR_IF_CNT_IS_NEGATIVE-macro/20230216-003454
base:   a06377c5d01eeeaa52ad979b62c3c72efcc3eff0
patch link:    https://lore.kernel.org/r/20230215163204.2856631-3-christoph.boehmwalder%40linbit.com
patch subject: [PATCH 2/7] drbd: Add peer device parameter to whole-bitmap I/O handlers
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20230216/202302160440.lpWjbVR5-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/e55221e8a69f80303803dab7e079bff7b698ea02
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Christoph-B-hmwalder/drbd-Rip-out-the-ERR_IF_CNT_IS_NEGATIVE-macro/20230216-003454
        git checkout e55221e8a69f80303803dab7e079bff7b698ea02
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302160440.lpWjbVR5-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/block/drbd/drbd_receiver.c: In function 'drbd_sync_handshake':
>> drivers/block/drbd/drbd_receiver.c:3593:21: error: too many arguments to function 'drbd_bitmap_io'
    3593 |                 if (drbd_bitmap_io(device, &drbd_bmio_set_n_write, "set_n_write from sync_handshake",
         |                     ^~~~~~~~~~~~~~
   In file included from drivers/block/drbd/drbd_receiver.c:37:
   drivers/block/drbd/drbd_int.h:1072:12: note: declared here
    1072 | extern int drbd_bitmap_io(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_receiver.c: In function 'receive_uuids':
   drivers/block/drbd/drbd_receiver.c:4271:25: error: too many arguments to function 'drbd_bitmap_io'
    4271 |                         drbd_bitmap_io(device, &drbd_bmio_clear_n_write,
         |                         ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1072:12: note: declared here
    1072 | extern int drbd_bitmap_io(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_receiver.c: In function 'receive_bitmap':
>> drivers/block/drbd/drbd_receiver.c:4880:23: error: too few arguments to function 'drbd_send_bitmap'
    4880 |                 err = drbd_send_bitmap(device);
         |                       ^~~~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1045:12: note: declared here
    1045 | extern int drbd_send_bitmap(struct drbd_device *device, struct drbd_peer_device *peer_device);
         |            ^~~~~~~~~~~~~~~~
   drivers/block/drbd/drbd_receiver.c: In function 'drbd_disconnected':
>> drivers/block/drbd/drbd_receiver.c:5216:40: error: passing argument 2 of 'drbd_bitmap_io' from incompatible pointer type [-Werror=incompatible-pointer-types]
    5216 |                 drbd_bitmap_io(device, &drbd_bm_write_copy_pages,
         |                                        ^~~~~~~~~~~~~~~~~~~~~~~~~
         |                                        |
         |                                        int (*)(struct drbd_device *)
   drivers/block/drbd/drbd_int.h:1073:23: note: expected 'int (*)(struct drbd_device *, struct drbd_peer_device *)' but argument is of type 'int (*)(struct drbd_device *)'
    1073 |                 int (*io_fn)(struct drbd_device *, struct drbd_peer_device *),
         |                 ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/block/drbd/drbd_receiver.c:5216:17: error: too many arguments to function 'drbd_bitmap_io'
    5216 |                 drbd_bitmap_io(device, &drbd_bm_write_copy_pages,
         |                 ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1072:12: note: declared here
    1072 | extern int drbd_bitmap_io(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~
   cc1: some warnings being treated as errors
--
   drivers/block/drbd/drbd_main.c: In function 'send_bitmap_rle_or_plain':
>> drivers/block/drbd/drbd_main.c:1203:29: error: 'device' redeclared as different kind of symbol
    1203 |         struct drbd_device *device = peer_device->device;
         |                             ^~~~~~
   drivers/block/drbd/drbd_main.c:1201:51: note: previous definition of 'device' with type 'struct drbd_peer_device *'
    1201 | send_bitmap_rle_or_plain(struct drbd_peer_device *device, struct bm_xfer_ctx *c)
         |                          ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
>> drivers/block/drbd/drbd_main.c:1203:38: error: 'peer_device' undeclared (first use in this function); did you mean 'phy_device'?
    1203 |         struct drbd_device *device = peer_device->device;
         |                                      ^~~~~~~~~~~
         |                                      phy_device
   drivers/block/drbd/drbd_main.c:1203:38: note: each undeclared identifier is reported only once for each function it appears in
   drivers/block/drbd/drbd_main.c: In function '_drbd_send_bitmap':
>> drivers/block/drbd/drbd_main.c:1272:29: error: too few arguments to function 'drbd_bm_write'
    1272 |                         if (drbd_bm_write(device)) {
         |                             ^~~~~~~~~~~~~
   In file included from drivers/block/drbd/drbd_main.c:46:
   drivers/block/drbd/drbd_int.h:1293:13: note: declared here
    1293 | extern int  drbd_bm_write(struct drbd_device *device,
         |             ^~~~~~~~~~~~~
   drivers/block/drbd/drbd_main.c: At top level:
>> drivers/block/drbd/drbd_main.c:3497:6: error: conflicting types for 'drbd_queue_bitmap_io'; have 'void(struct drbd_device *, int (*)(struct drbd_device *, struct drbd_peer_device *), void (*)(struct drbd_device *, int), char *, enum bm_flag,  struct drbd_peer_device *)'
    3497 | void drbd_queue_bitmap_io(struct drbd_device *device,
         |      ^~~~~~~~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1068:13: note: previous declaration of 'drbd_queue_bitmap_io' with type 'void(struct drbd_device *, int (*)(struct drbd_device *, struct drbd_peer_device *), void (*)(struct drbd_device *, int), char *, enum bm_flag)'
    1068 | extern void drbd_queue_bitmap_io(struct drbd_device *device,
         |             ^~~~~~~~~~~~~~~~~~~~
>> drivers/block/drbd/drbd_main.c:3540:5: error: conflicting types for 'drbd_bitmap_io'; have 'int(struct drbd_device *, int (*)(struct drbd_device *, struct drbd_peer_device *), char *, enum bm_flag,  struct drbd_peer_device *)'
    3540 | int drbd_bitmap_io(struct drbd_device *device,
         |     ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1072:12: note: previous declaration of 'drbd_bitmap_io' with type 'int(struct drbd_device *, int (*)(struct drbd_device *, struct drbd_peer_device *), char *, enum bm_flag)'
    1072 | extern int drbd_bitmap_io(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~
--
   In file included from include/linux/drbd_genl_api.h:54,
                    from drivers/block/drbd/drbd_int.h:35,
                    from drivers/block/drbd/drbd_nl.c:24:
   include/linux/drbd_genl_api.h:51:33: warning: no previous prototype for 'drbd_genl_cmd_to_str' [-Wmissing-prototypes]
      51 | #define GENL_MAGIC_FAMILY       drbd
         |                                 ^~~~
   include/linux/genl_magic_struct.h:20:25: note: in definition of macro 'CONCAT__'
      20 | #define CONCAT__(a,b)   a ## b
         |                         ^
   include/linux/genl_magic_func.h:212:13: note: in expansion of macro 'CONCAT_'
     212 | const char *CONCAT_(GENL_MAGIC_FAMILY, _genl_cmd_to_str)(__u8 cmd)
         |             ^~~~~~~
   include/linux/genl_magic_func.h:212:21: note: in expansion of macro 'GENL_MAGIC_FAMILY'
     212 | const char *CONCAT_(GENL_MAGIC_FAMILY, _genl_cmd_to_str)(__u8 cmd)
         |                     ^~~~~~~~~~~~~~~~~
   drivers/block/drbd/drbd_nl.c: In function 'drbd_determine_dev_size':
   drivers/block/drbd/drbd_nl.c:1055:70: warning: pointer type mismatch in conditional expression
    1055 |                 drbd_bitmap_io(device, md_moved ? &drbd_bm_write_all : &drbd_bm_write,
         |                                                                      ^
>> drivers/block/drbd/drbd_nl.c:1055:17: error: too many arguments to function 'drbd_bitmap_io'
    1055 |                 drbd_bitmap_io(device, md_moved ? &drbd_bm_write_all : &drbd_bm_write,
         |                 ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1072:12: note: declared here
    1072 | extern int drbd_bitmap_io(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_nl.c: In function 'drbd_adm_attach':
   drivers/block/drbd/drbd_nl.c:2029:21: error: too many arguments to function 'drbd_bitmap_io'
    2029 |                 if (drbd_bitmap_io(device, &drbd_bmio_set_n_write,
         |                     ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1072:12: note: declared here
    1072 | extern int drbd_bitmap_io(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_nl.c:2036:21: error: too many arguments to function 'drbd_bitmap_io'
    2036 |                 if (drbd_bitmap_io(device, &drbd_bm_read,
         |                     ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1072:12: note: declared here
    1072 | extern int drbd_bitmap_io(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_nl.c: In function 'drbd_adm_invalidate':
   drivers/block/drbd/drbd_nl.c:2976:29: error: too many arguments to function 'drbd_bitmap_io'
    2976 |                         if (drbd_bitmap_io(device, &drbd_bmio_set_n_write,
         |                             ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1072:12: note: declared here
    1072 | extern int drbd_bitmap_io(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_nl.c: In function 'drbd_bmio_set_susp_al':
>> drivers/block/drbd/drbd_nl.c:3014:14: error: too few arguments to function 'drbd_bmio_set_n_write'
    3014 |         rv = drbd_bmio_set_n_write(device);
         |              ^~~~~~~~~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1078:12: note: declared here
    1078 | extern int drbd_bmio_set_n_write(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~~~~~~~~
   drivers/block/drbd/drbd_nl.c: In function 'drbd_adm_invalidate_peer':
>> drivers/block/drbd/drbd_nl.c:3055:52: error: passing argument 2 of 'drbd_bitmap_io' from incompatible pointer type [-Werror=incompatible-pointer-types]
    3055 |                         if (drbd_bitmap_io(device, &drbd_bmio_set_susp_al,
         |                                                    ^~~~~~~~~~~~~~~~~~~~~~
         |                                                    |
         |                                                    int (*)(struct drbd_device *)
   drivers/block/drbd/drbd_int.h:1073:23: note: expected 'int (*)(struct drbd_device *, struct drbd_peer_device *)' but argument is of type 'int (*)(struct drbd_device *)'
    1073 |                 int (*io_fn)(struct drbd_device *, struct drbd_peer_device *),
         |                 ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/block/drbd/drbd_nl.c:3055:29: error: too many arguments to function 'drbd_bitmap_io'
    3055 |                         if (drbd_bitmap_io(device, &drbd_bmio_set_susp_al,
         |                             ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1072:12: note: declared here
    1072 | extern int drbd_bitmap_io(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_nl.c: In function 'drbd_adm_new_c_uuid':
   drivers/block/drbd/drbd_nl.c:4152:23: error: too many arguments to function 'drbd_bitmap_io'
    4152 |                 err = drbd_bitmap_io(device, &drbd_bmio_clear_n_write,
         |                       ^~~~~~~~~~~~~~
   drivers/block/drbd/drbd_int.h:1072:12: note: declared here
    1072 | extern int drbd_bitmap_io(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~
   cc1: some warnings being treated as errors
--
>> drivers/block/drbd/drbd_state.c:1520:5: error: conflicting types for 'drbd_bitmap_io_from_worker'; have 'int(struct drbd_device *, int (*)(struct drbd_device *, struct drbd_peer_device *), char *, enum bm_flag,  struct drbd_peer_device *)'
    1520 | int drbd_bitmap_io_from_worker(struct drbd_device *device,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/block/drbd/drbd_state.c:17:
   drivers/block/drbd/drbd_int.h:1075:12: note: previous declaration of 'drbd_bitmap_io_from_worker' with type 'int(struct drbd_device *, int (*)(struct drbd_device *, struct drbd_peer_device *), char *, enum bm_flag)'
    1075 | extern int drbd_bitmap_io_from_worker(struct drbd_device *device,
         |            ^~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/block/drbd/drbd_state.c: In function 'after_state_ch':
>> drivers/block/drbd/drbd_state.c:1842:25: error: too few arguments to function 'drbd_bitmap_io_from_worker'
    1842 |                         drbd_bitmap_io_from_worker(device, &drbd_bm_write,
         |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/block/drbd/drbd_state.c:1520:5: note: declared here
    1520 | int drbd_bitmap_io_from_worker(struct drbd_device *device,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/block/drbd/drbd_state.c:1854:17: error: too few arguments to function 'drbd_bitmap_io_from_worker'
    1854 |                 drbd_bitmap_io_from_worker(device, &drbd_bm_write,
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/block/drbd/drbd_state.c:1520:5: note: declared here
    1520 | int drbd_bitmap_io_from_worker(struct drbd_device *device,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/block/drbd/drbd_state.c:2014:46: error: passing argument 2 of 'drbd_queue_bitmap_io' from incompatible pointer type [-Werror=incompatible-pointer-types]
    2014 |                 drbd_queue_bitmap_io(device, &drbd_bm_write_copy_pages, NULL,
         |                                              ^~~~~~~~~~~~~~~~~~~~~~~~~
         |                                              |
         |                                              int (*)(struct drbd_device *)
   drivers/block/drbd/drbd_int.h:1069:40: note: expected 'int (*)(struct drbd_device *, struct drbd_peer_device *)' but argument is of type 'int (*)(struct drbd_device *)'
    1069 |                                  int (*io_fn)(struct drbd_device *, struct drbd_peer_device *),
         |                                  ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/drbd_bitmap_io +3593 drivers/block/drbd/drbd_receiver.c

b411b3637fa71f Philipp Reisner     2009-09-25  3443  
b411b3637fa71f Philipp Reisner     2009-09-25  3444  /* drbd_sync_handshake() returns the new conn state on success, or
b411b3637fa71f Philipp Reisner     2009-09-25  3445     CONN_MASK (-1) on failure.
b411b3637fa71f Philipp Reisner     2009-09-25  3446   */
69a227731a378f Andreas Gruenbacher 2011-08-09  3447  static enum drbd_conns drbd_sync_handshake(struct drbd_peer_device *peer_device,
69a227731a378f Andreas Gruenbacher 2011-08-09  3448  					   enum drbd_role peer_role,
b411b3637fa71f Philipp Reisner     2009-09-25  3449  					   enum drbd_disk_state peer_disk) __must_hold(local)
b411b3637fa71f Philipp Reisner     2009-09-25  3450  {
69a227731a378f Andreas Gruenbacher 2011-08-09  3451  	struct drbd_device *device = peer_device->device;
b411b3637fa71f Philipp Reisner     2009-09-25  3452  	enum drbd_conns rv = C_MASK;
b411b3637fa71f Philipp Reisner     2009-09-25  3453  	enum drbd_disk_state mydisk;
44ed167da74825 Philipp Reisner     2011-04-19  3454  	struct net_conf *nc;
d29e89e34952a9 Roland Kammerer     2018-12-20  3455  	int hg, rule_nr, rr_conflict, tentative, always_asbp;
b411b3637fa71f Philipp Reisner     2009-09-25  3456  
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  3457  	mydisk = device->state.disk;
b411b3637fa71f Philipp Reisner     2009-09-25  3458  	if (mydisk == D_NEGOTIATING)
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  3459  		mydisk = device->new_state_tmp.disk;
b411b3637fa71f Philipp Reisner     2009-09-25  3460  
d01801710265cf Andreas Gruenbacher 2011-07-03  3461  	drbd_info(device, "drbd_sync_handshake:\n");
9f2247bb9b75b2 Philipp Reisner     2012-08-16  3462  
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  3463  	spin_lock_irq(&device->ldev->md.uuid_lock);
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  3464  	drbd_uuid_dump(device, "self", device->ldev->md.uuid, device->comm_bm_set, 0);
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  3465  	drbd_uuid_dump(device, "peer", device->p_uuid,
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  3466  		       device->p_uuid[UI_SIZE], device->p_uuid[UI_FLAGS]);
b411b3637fa71f Philipp Reisner     2009-09-25  3467  
f2d3d75b66fc80 Lars Ellenberg      2016-06-14  3468  	hg = drbd_uuid_compare(device, peer_role, &rule_nr);
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  3469  	spin_unlock_irq(&device->ldev->md.uuid_lock);
b411b3637fa71f Philipp Reisner     2009-09-25  3470  
d01801710265cf Andreas Gruenbacher 2011-07-03  3471  	drbd_info(device, "uuid_compare()=%d by rule %d\n", hg, rule_nr);
b411b3637fa71f Philipp Reisner     2009-09-25  3472  
b411b3637fa71f Philipp Reisner     2009-09-25  3473  	if (hg == -1000) {
d01801710265cf Andreas Gruenbacher 2011-07-03  3474  		drbd_alert(device, "Unrelated data, aborting!\n");
b411b3637fa71f Philipp Reisner     2009-09-25  3475  		return C_MASK;
b411b3637fa71f Philipp Reisner     2009-09-25  3476  	}
f2d3d75b66fc80 Lars Ellenberg      2016-06-14  3477  	if (hg < -0x10000) {
f2d3d75b66fc80 Lars Ellenberg      2016-06-14  3478  		int proto, fflags;
f2d3d75b66fc80 Lars Ellenberg      2016-06-14  3479  		hg = -hg;
f2d3d75b66fc80 Lars Ellenberg      2016-06-14  3480  		proto = hg & 0xff;
f2d3d75b66fc80 Lars Ellenberg      2016-06-14  3481  		fflags = (hg >> 8) & 0xff;
f2d3d75b66fc80 Lars Ellenberg      2016-06-14  3482  		drbd_alert(device, "To resolve this both sides have to support at least protocol %d and feature flags 0x%x\n",
f2d3d75b66fc80 Lars Ellenberg      2016-06-14  3483  					proto, fflags);
f2d3d75b66fc80 Lars Ellenberg      2016-06-14  3484  		return C_MASK;
f2d3d75b66fc80 Lars Ellenberg      2016-06-14  3485  	}
4a23f264969827 Philipp Reisner     2011-01-11  3486  	if (hg < -1000) {
d01801710265cf Andreas Gruenbacher 2011-07-03  3487  		drbd_alert(device, "To resolve this both sides have to support at least protocol %d\n", -hg - 1000);
b411b3637fa71f Philipp Reisner     2009-09-25  3488  		return C_MASK;
b411b3637fa71f Philipp Reisner     2009-09-25  3489  	}
b411b3637fa71f Philipp Reisner     2009-09-25  3490  
b411b3637fa71f Philipp Reisner     2009-09-25  3491  	if    ((mydisk == D_INCONSISTENT && peer_disk > D_INCONSISTENT) ||
b411b3637fa71f Philipp Reisner     2009-09-25  3492  	    (peer_disk == D_INCONSISTENT && mydisk    > D_INCONSISTENT)) {
b411b3637fa71f Philipp Reisner     2009-09-25  3493  		int f = (hg == -100) || abs(hg) == 2;
b411b3637fa71f Philipp Reisner     2009-09-25  3494  		hg = mydisk > D_INCONSISTENT ? 1 : -1;
b411b3637fa71f Philipp Reisner     2009-09-25  3495  		if (f)
b411b3637fa71f Philipp Reisner     2009-09-25  3496  			hg = hg*2;
d01801710265cf Andreas Gruenbacher 2011-07-03  3497  		drbd_info(device, "Becoming sync %s due to disk states.\n",
b411b3637fa71f Philipp Reisner     2009-09-25  3498  		     hg > 0 ? "source" : "target");
b411b3637fa71f Philipp Reisner     2009-09-25  3499  	}
b411b3637fa71f Philipp Reisner     2009-09-25  3500  
3a11a4878939e0 Adam Gandelman      2010-04-08  3501  	if (abs(hg) == 100)
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  3502  		drbd_khelper(device, "initial-split-brain");
3a11a4878939e0 Adam Gandelman      2010-04-08  3503  
44ed167da74825 Philipp Reisner     2011-04-19  3504  	rcu_read_lock();
69a227731a378f Andreas Gruenbacher 2011-08-09  3505  	nc = rcu_dereference(peer_device->connection->net_conf);
d29e89e34952a9 Roland Kammerer     2018-12-20  3506  	always_asbp = nc->always_asbp;
d29e89e34952a9 Roland Kammerer     2018-12-20  3507  	rr_conflict = nc->rr_conflict;
d29e89e34952a9 Roland Kammerer     2018-12-20  3508  	tentative = nc->tentative;
d29e89e34952a9 Roland Kammerer     2018-12-20  3509  	rcu_read_unlock();
44ed167da74825 Philipp Reisner     2011-04-19  3510  
d29e89e34952a9 Roland Kammerer     2018-12-20  3511  	if (hg == 100 || (hg == -100 && always_asbp)) {
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  3512  		int pcount = (device->state.role == R_PRIMARY)
b411b3637fa71f Philipp Reisner     2009-09-25  3513  			   + (peer_role == R_PRIMARY);
b411b3637fa71f Philipp Reisner     2009-09-25  3514  		int forced = (hg == -100);
b411b3637fa71f Philipp Reisner     2009-09-25  3515  
b411b3637fa71f Philipp Reisner     2009-09-25  3516  		switch (pcount) {
b411b3637fa71f Philipp Reisner     2009-09-25  3517  		case 0:
69a227731a378f Andreas Gruenbacher 2011-08-09  3518  			hg = drbd_asb_recover_0p(peer_device);
b411b3637fa71f Philipp Reisner     2009-09-25  3519  			break;
b411b3637fa71f Philipp Reisner     2009-09-25  3520  		case 1:
69a227731a378f Andreas Gruenbacher 2011-08-09  3521  			hg = drbd_asb_recover_1p(peer_device);
b411b3637fa71f Philipp Reisner     2009-09-25  3522  			break;
b411b3637fa71f Philipp Reisner     2009-09-25  3523  		case 2:
69a227731a378f Andreas Gruenbacher 2011-08-09  3524  			hg = drbd_asb_recover_2p(peer_device);
b411b3637fa71f Philipp Reisner     2009-09-25  3525  			break;
b411b3637fa71f Philipp Reisner     2009-09-25  3526  		}
b411b3637fa71f Philipp Reisner     2009-09-25  3527  		if (abs(hg) < 100) {
d01801710265cf Andreas Gruenbacher 2011-07-03  3528  			drbd_warn(device, "Split-Brain detected, %d primaries, "
b411b3637fa71f Philipp Reisner     2009-09-25  3529  			     "automatically solved. Sync from %s node\n",
b411b3637fa71f Philipp Reisner     2009-09-25  3530  			     pcount, (hg < 0) ? "peer" : "this");
b411b3637fa71f Philipp Reisner     2009-09-25  3531  			if (forced) {
d01801710265cf Andreas Gruenbacher 2011-07-03  3532  				drbd_warn(device, "Doing a full sync, since"
b411b3637fa71f Philipp Reisner     2009-09-25  3533  				     " UUIDs where ambiguous.\n");
b411b3637fa71f Philipp Reisner     2009-09-25  3534  				hg = hg*2;
b411b3637fa71f Philipp Reisner     2009-09-25  3535  			}
b411b3637fa71f Philipp Reisner     2009-09-25  3536  		}
b411b3637fa71f Philipp Reisner     2009-09-25  3537  	}
b411b3637fa71f Philipp Reisner     2009-09-25  3538  
b411b3637fa71f Philipp Reisner     2009-09-25  3539  	if (hg == -100) {
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  3540  		if (test_bit(DISCARD_MY_DATA, &device->flags) && !(device->p_uuid[UI_FLAGS]&1))
b411b3637fa71f Philipp Reisner     2009-09-25  3541  			hg = -1;
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  3542  		if (!test_bit(DISCARD_MY_DATA, &device->flags) && (device->p_uuid[UI_FLAGS]&1))
b411b3637fa71f Philipp Reisner     2009-09-25  3543  			hg = 1;
b411b3637fa71f Philipp Reisner     2009-09-25  3544  
b411b3637fa71f Philipp Reisner     2009-09-25  3545  		if (abs(hg) < 100)
d01801710265cf Andreas Gruenbacher 2011-07-03  3546  			drbd_warn(device, "Split-Brain detected, manually solved. "
b411b3637fa71f Philipp Reisner     2009-09-25  3547  			     "Sync from %s node\n",
b411b3637fa71f Philipp Reisner     2009-09-25  3548  			     (hg < 0) ? "peer" : "this");
b411b3637fa71f Philipp Reisner     2009-09-25  3549  	}
b411b3637fa71f Philipp Reisner     2009-09-25  3550  
b411b3637fa71f Philipp Reisner     2009-09-25  3551  	if (hg == -100) {
580b9767dbdf2c Lars Ellenberg      2010-02-26  3552  		/* FIXME this log message is not correct if we end up here
580b9767dbdf2c Lars Ellenberg      2010-02-26  3553  		 * after an attempted attach on a diskless node.
580b9767dbdf2c Lars Ellenberg      2010-02-26  3554  		 * We just refuse to attach -- well, we drop the "connection"
580b9767dbdf2c Lars Ellenberg      2010-02-26  3555  		 * to that disk, in a way... */
d01801710265cf Andreas Gruenbacher 2011-07-03  3556  		drbd_alert(device, "Split-Brain detected but unresolved, dropping connection!\n");
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  3557  		drbd_khelper(device, "split-brain");
b411b3637fa71f Philipp Reisner     2009-09-25  3558  		return C_MASK;
b411b3637fa71f Philipp Reisner     2009-09-25  3559  	}
b411b3637fa71f Philipp Reisner     2009-09-25  3560  
b411b3637fa71f Philipp Reisner     2009-09-25  3561  	if (hg > 0 && mydisk <= D_INCONSISTENT) {
d01801710265cf Andreas Gruenbacher 2011-07-03  3562  		drbd_err(device, "I shall become SyncSource, but I am inconsistent!\n");
b411b3637fa71f Philipp Reisner     2009-09-25  3563  		return C_MASK;
b411b3637fa71f Philipp Reisner     2009-09-25  3564  	}
b411b3637fa71f Philipp Reisner     2009-09-25  3565  
b411b3637fa71f Philipp Reisner     2009-09-25  3566  	if (hg < 0 && /* by intention we do not use mydisk here. */
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  3567  	    device->state.role == R_PRIMARY && device->state.disk >= D_CONSISTENT) {
44ed167da74825 Philipp Reisner     2011-04-19  3568  		switch (rr_conflict) {
b411b3637fa71f Philipp Reisner     2009-09-25  3569  		case ASB_CALL_HELPER:
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  3570  			drbd_khelper(device, "pri-lost");
df561f6688fef7 Gustavo A. R. Silva 2020-08-23  3571  			fallthrough;
b411b3637fa71f Philipp Reisner     2009-09-25  3572  		case ASB_DISCONNECT:
d01801710265cf Andreas Gruenbacher 2011-07-03  3573  			drbd_err(device, "I shall become SyncTarget, but I am primary!\n");
b411b3637fa71f Philipp Reisner     2009-09-25  3574  			return C_MASK;
b411b3637fa71f Philipp Reisner     2009-09-25  3575  		case ASB_VIOLENTLY:
d01801710265cf Andreas Gruenbacher 2011-07-03  3576  			drbd_warn(device, "Becoming SyncTarget, violating the stable-data"
b411b3637fa71f Philipp Reisner     2009-09-25  3577  			     "assumption\n");
b411b3637fa71f Philipp Reisner     2009-09-25  3578  		}
b411b3637fa71f Philipp Reisner     2009-09-25  3579  	}
b411b3637fa71f Philipp Reisner     2009-09-25  3580  
69a227731a378f Andreas Gruenbacher 2011-08-09  3581  	if (tentative || test_bit(CONN_DRY_RUN, &peer_device->connection->flags)) {
cf14c2e987ba0a Philipp Reisner     2010-02-02  3582  		if (hg == 0)
d01801710265cf Andreas Gruenbacher 2011-07-03  3583  			drbd_info(device, "dry-run connect: No resync, would become Connected immediately.\n");
cf14c2e987ba0a Philipp Reisner     2010-02-02  3584  		else
d01801710265cf Andreas Gruenbacher 2011-07-03  3585  			drbd_info(device, "dry-run connect: Would become %s, doing a %s resync.",
cf14c2e987ba0a Philipp Reisner     2010-02-02  3586  				 drbd_conn_str(hg > 0 ? C_SYNC_SOURCE : C_SYNC_TARGET),
cf14c2e987ba0a Philipp Reisner     2010-02-02  3587  				 abs(hg) >= 2 ? "full" : "bit-map based");
cf14c2e987ba0a Philipp Reisner     2010-02-02  3588  		return C_MASK;
cf14c2e987ba0a Philipp Reisner     2010-02-02  3589  	}
cf14c2e987ba0a Philipp Reisner     2010-02-02  3590  
b411b3637fa71f Philipp Reisner     2009-09-25  3591  	if (abs(hg) >= 2) {
d01801710265cf Andreas Gruenbacher 2011-07-03  3592  		drbd_info(device, "Writing the whole bitmap, full sync required after drbd_sync_handshake.\n");
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03 @3593  		if (drbd_bitmap_io(device, &drbd_bmio_set_n_write, "set_n_write from sync_handshake",
e55221e8a69f80 Andreas Gruenbacher 2023-02-15  3594  					BM_LOCKED_SET_ALLOWED, NULL))
b411b3637fa71f Philipp Reisner     2009-09-25  3595  			return C_MASK;
b411b3637fa71f Philipp Reisner     2009-09-25  3596  	}
b411b3637fa71f Philipp Reisner     2009-09-25  3597  
b411b3637fa71f Philipp Reisner     2009-09-25  3598  	if (hg > 0) { /* become sync source. */
b411b3637fa71f Philipp Reisner     2009-09-25  3599  		rv = C_WF_BITMAP_S;
b411b3637fa71f Philipp Reisner     2009-09-25  3600  	} else if (hg < 0) { /* become sync target */
b411b3637fa71f Philipp Reisner     2009-09-25  3601  		rv = C_WF_BITMAP_T;
b411b3637fa71f Philipp Reisner     2009-09-25  3602  	} else {
b411b3637fa71f Philipp Reisner     2009-09-25  3603  		rv = C_CONNECTED;
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  3604  		if (drbd_bm_total_weight(device)) {
d01801710265cf Andreas Gruenbacher 2011-07-03  3605  			drbd_info(device, "No resync, but %lu bits in bitmap!\n",
b30ab7913b0a7b Andreas Gruenbacher 2011-07-03  3606  			     drbd_bm_total_weight(device));
b411b3637fa71f Philipp Reisner     2009-09-25  3607  		}
b411b3637fa71f Philipp Reisner     2009-09-25  3608  	}
b411b3637fa71f Philipp Reisner     2009-09-25  3609  
b411b3637fa71f Philipp Reisner     2009-09-25  3610  	return rv;
b411b3637fa71f Philipp Reisner     2009-09-25  3611  }
b411b3637fa71f Philipp Reisner     2009-09-25  3612
diff mbox series

Patch

diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index 289876ffbc31..7d8e3b02a1da 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -1216,7 +1216,9 @@  static int bm_rw(struct drbd_device *device, const unsigned int flags, unsigned
  * drbd_bm_read() - Read the whole bitmap from its on disk location.
  * @device:	DRBD device.
  */
-int drbd_bm_read(struct drbd_device *device) __must_hold(local)
+int drbd_bm_read(struct drbd_device *device,
+		 struct drbd_peer_device *peer_device) __must_hold(local)
+
 {
 	return bm_rw(device, BM_AIO_READ, 0);
 }
@@ -1227,7 +1229,8 @@  int drbd_bm_read(struct drbd_device *device) __must_hold(local)
  *
  * Will only write pages that have changed since last IO.
  */
-int drbd_bm_write(struct drbd_device *device) __must_hold(local)
+int drbd_bm_write(struct drbd_device *device,
+		 struct drbd_peer_device *peer_device) __must_hold(local)
 {
 	return bm_rw(device, 0, 0);
 }
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index 772023ace749..63919781fe30 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -541,9 +541,10 @@  struct drbd_md_io {
 
 struct bm_io_work {
 	struct drbd_work w;
+	struct drbd_peer_device *peer_device;
 	char *why;
 	enum bm_flag flags;
-	int (*io_fn)(struct drbd_device *device);
+	int (*io_fn)(struct drbd_device *device, struct drbd_peer_device *peer_device);
 	void (*done)(struct drbd_device *device, int rv);
 };
 
@@ -1041,7 +1042,7 @@  extern int drbd_send_drequest_csum(struct drbd_peer_device *, sector_t sector,
 				   enum drbd_packet cmd);
 extern int drbd_send_ov_request(struct drbd_peer_device *, sector_t sector, int size);
 
-extern int drbd_send_bitmap(struct drbd_device *device);
+extern int drbd_send_bitmap(struct drbd_device *device, struct drbd_peer_device *peer_device);
 extern void drbd_send_sr_reply(struct drbd_peer_device *, enum drbd_state_rv retcode);
 extern void conn_send_sr_reply(struct drbd_connection *connection, enum drbd_state_rv retcode);
 extern int drbd_send_rs_deallocated(struct drbd_peer_device *, struct drbd_peer_request *);
@@ -1065,17 +1066,19 @@  extern void drbd_md_clear_flag(struct drbd_device *device, int flags)__must_hold
 extern int drbd_md_test_flag(struct drbd_backing_dev *, int);
 extern void drbd_md_mark_dirty(struct drbd_device *device);
 extern void drbd_queue_bitmap_io(struct drbd_device *device,
-				 int (*io_fn)(struct drbd_device *),
+				 int (*io_fn)(struct drbd_device *, struct drbd_peer_device *),
 				 void (*done)(struct drbd_device *, int),
 				 char *why, enum bm_flag flags);
 extern int drbd_bitmap_io(struct drbd_device *device,
-		int (*io_fn)(struct drbd_device *),
+		int (*io_fn)(struct drbd_device *, struct drbd_peer_device *),
 		char *why, enum bm_flag flags);
 extern int drbd_bitmap_io_from_worker(struct drbd_device *device,
-		int (*io_fn)(struct drbd_device *),
+		int (*io_fn)(struct drbd_device *, struct drbd_peer_device *),
 		char *why, enum bm_flag flags);
-extern int drbd_bmio_set_n_write(struct drbd_device *device) __must_hold(local);
-extern int drbd_bmio_clear_n_write(struct drbd_device *device) __must_hold(local);
+extern int drbd_bmio_set_n_write(struct drbd_device *device,
+		struct drbd_peer_device *peer_device) __must_hold(local);
+extern int drbd_bmio_clear_n_write(struct drbd_device *device,
+		struct drbd_peer_device *peer_device) __must_hold(local);
 
 /* Meta data layout
  *
@@ -1284,9 +1287,11 @@  extern void _drbd_bm_set_bits(struct drbd_device *device,
 		const unsigned long s, const unsigned long e);
 extern int  drbd_bm_test_bit(struct drbd_device *device, unsigned long bitnr);
 extern int  drbd_bm_e_weight(struct drbd_device *device, unsigned long enr);
-extern int  drbd_bm_read(struct drbd_device *device) __must_hold(local);
+extern int  drbd_bm_read(struct drbd_device *device,
+		struct drbd_peer_device *peer_device) __must_hold(local);
 extern void drbd_bm_mark_for_writeout(struct drbd_device *device, int page_nr);
-extern int  drbd_bm_write(struct drbd_device *device) __must_hold(local);
+extern int  drbd_bm_write(struct drbd_device *device,
+		struct drbd_peer_device *peer_device) __must_hold(local);
 extern void drbd_bm_reset_al_hints(struct drbd_device *device) __must_hold(local);
 extern int  drbd_bm_write_hinted(struct drbd_device *device) __must_hold(local);
 extern int  drbd_bm_write_lazy(struct drbd_device *device, unsigned upper_idx) __must_hold(local);
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 2c764f7ee4a7..5d98017497e4 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1198,10 +1198,11 @@  static int fill_bitmap_rle_bits(struct drbd_device *device,
  * code upon failure.
  */
 static int
-send_bitmap_rle_or_plain(struct drbd_device *device, struct bm_xfer_ctx *c)
+send_bitmap_rle_or_plain(struct drbd_peer_device *device, struct bm_xfer_ctx *c)
 {
-	struct drbd_socket *sock = &first_peer_device(device)->connection->data;
-	unsigned int header_size = drbd_header_size(first_peer_device(device)->connection);
+	struct drbd_device *device = peer_device->device;
+	struct drbd_socket *sock = &peer_device->connection->data;
+	unsigned int header_size = drbd_header_size(peer_device->connection);
 	struct p_compressed_bm *p = sock->sbuf + header_size;
 	int len, err;
 
@@ -1212,7 +1213,7 @@  send_bitmap_rle_or_plain(struct drbd_device *device, struct bm_xfer_ctx *c)
 
 	if (len) {
 		dcbp_set_code(p, RLE_VLI_Bits);
-		err = __send_command(first_peer_device(device)->connection, device->vnr, sock,
+		err = __send_command(peer_device->connection, device->vnr, sock,
 				     P_COMPRESSED_BITMAP, sizeof(*p) + len,
 				     NULL, 0);
 		c->packets[0]++;
@@ -1233,7 +1234,8 @@  send_bitmap_rle_or_plain(struct drbd_device *device, struct bm_xfer_ctx *c)
 		len = num_words * sizeof(*p);
 		if (len)
 			drbd_bm_get_lel(device, c->word_offset, num_words, p);
-		err = __send_command(first_peer_device(device)->connection, device->vnr, sock, P_BITMAP, len, NULL, 0);
+		err = __send_command(peer_device->connection, device->vnr, sock, P_BITMAP,
+				     len, NULL, 0);
 		c->word_offset += num_words;
 		c->bit_offset = c->word_offset * BITS_PER_LONG;
 
@@ -1254,7 +1256,8 @@  send_bitmap_rle_or_plain(struct drbd_device *device, struct bm_xfer_ctx *c)
 }
 
 /* See the comment at receive_bitmap() */
-static int _drbd_send_bitmap(struct drbd_device *device)
+static int _drbd_send_bitmap(struct drbd_device *device,
+			    struct drbd_peer_device *peer_device)
 {
 	struct bm_xfer_ctx c;
 	int err;
@@ -1285,20 +1288,20 @@  static int _drbd_send_bitmap(struct drbd_device *device)
 	};
 
 	do {
-		err = send_bitmap_rle_or_plain(device, &c);
+		err = send_bitmap_rle_or_plain(peer_device, &c);
 	} while (err > 0);
 
 	return err == 0;
 }
 
-int drbd_send_bitmap(struct drbd_device *device)
+int drbd_send_bitmap(struct drbd_device *device, struct drbd_peer_device *peer_device)
 {
-	struct drbd_socket *sock = &first_peer_device(device)->connection->data;
+	struct drbd_socket *sock = &peer_device->connection->data;
 	int err = -1;
 
 	mutex_lock(&sock->mutex);
 	if (sock->socket)
-		err = !_drbd_send_bitmap(device);
+		err = !_drbd_send_bitmap(device, peer_device);
 	mutex_unlock(&sock->mutex);
 	return err;
 }
@@ -3406,7 +3409,9 @@  void drbd_uuid_set_bm(struct drbd_device *device, u64 val) __must_hold(local)
  *
  * Sets all bits in the bitmap and writes the whole bitmap to stable storage.
  */
-int drbd_bmio_set_n_write(struct drbd_device *device) __must_hold(local)
+int drbd_bmio_set_n_write(struct drbd_device *device,
+			  struct drbd_peer_device *peer_device) __must_hold(local)
+
 {
 	int rv = -EIO;
 
@@ -3414,7 +3419,7 @@  int drbd_bmio_set_n_write(struct drbd_device *device) __must_hold(local)
 	drbd_md_sync(device);
 	drbd_bm_set_all(device);
 
-	rv = drbd_bm_write(device);
+	rv = drbd_bm_write(device, peer_device);
 
 	if (!rv) {
 		drbd_md_clear_flag(device, MDF_FULL_SYNC);
@@ -3430,11 +3435,13 @@  int drbd_bmio_set_n_write(struct drbd_device *device) __must_hold(local)
  *
  * Clears all bits in the bitmap and writes the whole bitmap to stable storage.
  */
-int drbd_bmio_clear_n_write(struct drbd_device *device) __must_hold(local)
+int drbd_bmio_clear_n_write(struct drbd_device *device,
+			  struct drbd_peer_device *peer_device) __must_hold(local)
+
 {
 	drbd_resume_al(device);
 	drbd_bm_clear_all(device);
-	return drbd_bm_write(device);
+	return drbd_bm_write(device, peer_device);
 }
 
 static int w_bitmap_io(struct drbd_work *w, int unused)
@@ -3453,7 +3460,7 @@  static int w_bitmap_io(struct drbd_work *w, int unused)
 
 	if (get_ldev(device)) {
 		drbd_bm_lock(device, work->why, work->flags);
-		rv = work->io_fn(device);
+		rv = work->io_fn(device, work->peer_device);
 		drbd_bm_unlock(device);
 		put_ldev(device);
 	}
@@ -3488,11 +3495,12 @@  static int w_bitmap_io(struct drbd_work *w, int unused)
  * put_ldev().
  */
 void drbd_queue_bitmap_io(struct drbd_device *device,
-			  int (*io_fn)(struct drbd_device *),
+			  int (*io_fn)(struct drbd_device *, struct drbd_peer_device *),
 			  void (*done)(struct drbd_device *, int),
-			  char *why, enum bm_flag flags)
+			  char *why, enum bm_flag flags,
+			  struct drbd_peer_device *peer_device)
 {
-	D_ASSERT(device, current == first_peer_device(device)->connection->worker.task);
+	D_ASSERT(device, current == peer_device->connection->worker.task);
 
 	D_ASSERT(device, !test_bit(BITMAP_IO_QUEUED, &device->flags));
 	D_ASSERT(device, !test_bit(BITMAP_IO, &device->flags));
@@ -3501,6 +3509,7 @@  void drbd_queue_bitmap_io(struct drbd_device *device,
 		drbd_err(device, "FIXME going to queue '%s' but '%s' still pending?\n",
 			why, device->bm_io_work.why);
 
+	device->bm_io_work.peer_device = peer_device;
 	device->bm_io_work.io_fn = io_fn;
 	device->bm_io_work.done = done;
 	device->bm_io_work.why = why;
@@ -3512,7 +3521,7 @@  void drbd_queue_bitmap_io(struct drbd_device *device,
 	 * application IO does not conflict anyways. */
 	if (flags == BM_LOCKED_CHANGE_ALLOWED || atomic_read(&device->ap_bio_cnt) == 0) {
 		if (!test_and_set_bit(BITMAP_IO_QUEUED, &device->flags))
-			drbd_queue_work(&first_peer_device(device)->connection->sender_work,
+			drbd_queue_work(&peer_device->connection->sender_work,
 					&device->bm_io_work.w);
 	}
 	spin_unlock_irq(&device->resource->req_lock);
@@ -3528,8 +3537,10 @@  void drbd_queue_bitmap_io(struct drbd_device *device,
  * freezes application IO while that the actual IO operations runs. This
  * functions MAY NOT be called from worker context.
  */
-int drbd_bitmap_io(struct drbd_device *device, int (*io_fn)(struct drbd_device *),
-		char *why, enum bm_flag flags)
+int drbd_bitmap_io(struct drbd_device *device,
+		int (*io_fn)(struct drbd_device *, struct drbd_peer_device *),
+		char *why, enum bm_flag flags,
+		struct drbd_peer_device *peer_device)
 {
 	/* Only suspend io, if some operation is supposed to be locked out */
 	const bool do_suspend_io = flags & (BM_DONT_CLEAR|BM_DONT_SET|BM_DONT_TEST);
@@ -3541,7 +3552,7 @@  int drbd_bitmap_io(struct drbd_device *device, int (*io_fn)(struct drbd_device *
 		drbd_suspend_io(device);
 
 	drbd_bm_lock(device, why, flags);
-	rv = io_fn(device);
+	rv = io_fn(device, peer_device);
 	drbd_bm_unlock(device);
 
 	if (do_suspend_io)
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 60757ac31701..07a52c5a2989 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -1053,7 +1053,7 @@  drbd_determine_dev_size(struct drbd_device *device, enum dds_flags flags, struct
 			 la_size_changed ? "size changed" : "md moved");
 		/* next line implicitly does drbd_suspend_io()+drbd_resume_io() */
 		drbd_bitmap_io(device, md_moved ? &drbd_bm_write_all : &drbd_bm_write,
-			       "size changed", BM_LOCKED_MASK);
+			       "size changed", BM_LOCKED_MASK, NULL);
 
 		/* on-disk bitmap and activity log is authoritative again
 		 * (unless there was an IO error meanwhile...) */
@@ -2027,13 +2027,15 @@  int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info)
 		drbd_info(device, "Assuming that all blocks are out of sync "
 		     "(aka FullSync)\n");
 		if (drbd_bitmap_io(device, &drbd_bmio_set_n_write,
-			"set_n_write from attaching", BM_LOCKED_MASK)) {
+			"set_n_write from attaching", BM_LOCKED_MASK,
+			NULL)) {
 			retcode = ERR_IO_MD_DISK;
 			goto force_diskless_dec;
 		}
 	} else {
 		if (drbd_bitmap_io(device, &drbd_bm_read,
-			"read from attaching", BM_LOCKED_MASK)) {
+			"read from attaching", BM_LOCKED_MASK,
+			NULL)) {
 			retcode = ERR_IO_MD_DISK;
 			goto force_diskless_dec;
 		}
@@ -2972,7 +2974,7 @@  int drbd_adm_invalidate(struct sk_buff *skb, struct genl_info *info)
 		retcode = drbd_request_state(device, NS(disk, D_INCONSISTENT));
 		if (retcode >= SS_SUCCESS) {
 			if (drbd_bitmap_io(device, &drbd_bmio_set_n_write,
-				"set_n_write from invalidate", BM_LOCKED_MASK))
+				"set_n_write from invalidate", BM_LOCKED_MASK, NULL))
 				retcode = ERR_IO_MD_DISK;
 		}
 	} else
@@ -3052,7 +3054,7 @@  int drbd_adm_invalidate_peer(struct sk_buff *skb, struct genl_info *info)
 		if (retcode >= SS_SUCCESS) {
 			if (drbd_bitmap_io(device, &drbd_bmio_set_susp_al,
 				"set_n_write from invalidate_peer",
-				BM_LOCKED_SET_ALLOWED))
+				BM_LOCKED_SET_ALLOWED, NULL))
 				retcode = ERR_IO_MD_DISK;
 		}
 	} else
@@ -4148,7 +4150,7 @@  int drbd_adm_new_c_uuid(struct sk_buff *skb, struct genl_info *info)
 
 	if (args.clear_bm) {
 		err = drbd_bitmap_io(device, &drbd_bmio_clear_n_write,
-			"clear_n_write from new_c_uuid", BM_LOCKED_MASK);
+			"clear_n_write from new_c_uuid", BM_LOCKED_MASK, NULL);
 		if (err) {
 			drbd_err(device, "Writing bitmap failed with %d\n", err);
 			retcode = ERR_IO_MD_DISK;
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 757f4692b5bd..424748f6e4fa 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -3591,7 +3591,7 @@  static enum drbd_conns drbd_sync_handshake(struct drbd_peer_device *peer_device,
 	if (abs(hg) >= 2) {
 		drbd_info(device, "Writing the whole bitmap, full sync required after drbd_sync_handshake.\n");
 		if (drbd_bitmap_io(device, &drbd_bmio_set_n_write, "set_n_write from sync_handshake",
-					BM_LOCKED_SET_ALLOWED))
+					BM_LOCKED_SET_ALLOWED, NULL))
 			return C_MASK;
 	}
 
@@ -4270,7 +4270,7 @@  static int receive_uuids(struct drbd_connection *connection, struct packet_info
 			drbd_info(device, "Accepted new current UUID, preparing to skip initial sync\n");
 			drbd_bitmap_io(device, &drbd_bmio_clear_n_write,
 					"clear_n_write from receive_uuids",
-					BM_LOCKED_TEST_ALLOWED);
+					BM_LOCKED_TEST_ALLOWED, NULL);
 			_drbd_uuid_set(device, UI_CURRENT, p_uuid[UI_CURRENT]);
 			_drbd_uuid_set(device, UI_BITMAP, 0);
 			_drbd_set_state(_NS2(device, disk, D_UP_TO_DATE, pdsk, D_UP_TO_DATE),
@@ -5214,7 +5214,7 @@  static int drbd_disconnected(struct drbd_peer_device *peer_device)
 
 	if (get_ldev(device)) {
 		drbd_bitmap_io(device, &drbd_bm_write_copy_pages,
-				"write from disconnected", BM_LOCKED_CHANGE_ALLOWED);
+				"write from disconnected", BM_LOCKED_CHANGE_ALLOWED, NULL);
 		put_ldev(device);
 	}
 
diff --git a/drivers/block/drbd/drbd_state.c b/drivers/block/drbd/drbd_state.c
index 75d13ea0024f..0b335ddd6d12 100644
--- a/drivers/block/drbd/drbd_state.c
+++ b/drivers/block/drbd/drbd_state.c
@@ -1518,8 +1518,9 @@  static void abw_start_sync(struct drbd_device *device, int rv)
 }
 
 int drbd_bitmap_io_from_worker(struct drbd_device *device,
-		int (*io_fn)(struct drbd_device *),
-		char *why, enum bm_flag flags)
+		int (*io_fn)(struct drbd_device *, struct drbd_peer_device *),
+		char *why, enum bm_flag flags,
+		struct drbd_peer_device *peer_device)
 {
 	int rv;
 
@@ -1529,7 +1530,7 @@  int drbd_bitmap_io_from_worker(struct drbd_device *device,
 	atomic_inc(&device->suspend_cnt);
 
 	drbd_bm_lock(device, why, flags);
-	rv = io_fn(device);
+	rv = io_fn(device, peer_device);
 	drbd_bm_unlock(device);
 
 	drbd_resume_io(device);