| Message ID | 20211122030038.1938875-6-cgxu519@mykernel.net (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | implement containerized syncfs for overlayfs | expand |
On Mon 22-11-21 11:00:36, Chengguang Xu wrote: > From: Chengguang Xu <charliecgxu@tencent.com> > > In order to wait syncing upper inodes we need to > call wait_sb_inodes() in overlayfs' ->sync_fs. > > Signed-off-by: Chengguang Xu <charliecgxu@tencent.com> Looks good. Feel free to add: Reviewed-by: Jan Kara <jack@suse.cz> Honza > --- > fs/fs-writeback.c | 3 ++- > include/linux/writeback.h | 1 + > 2 files changed, 3 insertions(+), 1 deletion(-) > > diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c > index 81ec192ce067..0438c911241e 100644 > --- a/fs/fs-writeback.c > +++ b/fs/fs-writeback.c > @@ -2505,7 +2505,7 @@ EXPORT_SYMBOL(__mark_inode_dirty); > * completed by the time we have gained the lock and waited for all IO that is > * in progress regardless of the order callers are granted the lock. > */ > -static void wait_sb_inodes(struct super_block *sb) > +void wait_sb_inodes(struct super_block *sb) > { > LIST_HEAD(sync_list); > > @@ -2589,6 +2589,7 @@ static void wait_sb_inodes(struct super_block *sb) > rcu_read_unlock(); > mutex_unlock(&sb->s_sync_lock); > } > +EXPORT_SYMBOL(wait_sb_inodes); > > static void __writeback_inodes_sb_nr(struct super_block *sb, unsigned long nr, > enum wb_reason reason, bool skip_if_busy) > diff --git a/include/linux/writeback.h b/include/linux/writeback.h > index d1f65adf6a26..d7aacd0434cf 100644 > --- a/include/linux/writeback.h > +++ b/include/linux/writeback.h > @@ -198,6 +198,7 @@ void wakeup_flusher_threads_bdi(struct backing_dev_info *bdi, > enum wb_reason reason); > void inode_wait_for_writeback(struct inode *inode); > void inode_io_list_del(struct inode *inode); > +void wait_sb_inodes(struct super_block *sb); > > /* writeback.h requires fs.h; it, too, is not included from here. */ > static inline void wait_on_inode(struct inode *inode) > -- > 2.27.0 > >
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 81ec192ce067..0438c911241e 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -2505,7 +2505,7 @@ EXPORT_SYMBOL(__mark_inode_dirty); * completed by the time we have gained the lock and waited for all IO that is * in progress regardless of the order callers are granted the lock. */ -static void wait_sb_inodes(struct super_block *sb) +void wait_sb_inodes(struct super_block *sb) { LIST_HEAD(sync_list); @@ -2589,6 +2589,7 @@ static void wait_sb_inodes(struct super_block *sb) rcu_read_unlock(); mutex_unlock(&sb->s_sync_lock); } +EXPORT_SYMBOL(wait_sb_inodes); static void __writeback_inodes_sb_nr(struct super_block *sb, unsigned long nr, enum wb_reason reason, bool skip_if_busy) diff --git a/include/linux/writeback.h b/include/linux/writeback.h index d1f65adf6a26..d7aacd0434cf 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -198,6 +198,7 @@ void wakeup_flusher_threads_bdi(struct backing_dev_info *bdi, enum wb_reason reason); void inode_wait_for_writeback(struct inode *inode); void inode_io_list_del(struct inode *inode); +void wait_sb_inodes(struct super_block *sb); /* writeback.h requires fs.h; it, too, is not included from here. */ static inline void wait_on_inode(struct inode *inode)