| Message ID | 20220526173840.578265-15-shr@fb.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | io-uring/xfs: support async buffered writes | expand |
On Thu, May 26, 2022 at 10:38:38AM -0700, Stefan Roesch wrote: > This changes the function signature of the function xfs_ilock_iocb(): > - the parameter iocb is replaced with ip, passing in an xfs_inode > - the parameter iocb_flags is added to be able to pass in the iocb flags > > This allows to call the function from xfs_file_buffered_writes. xfs_file_buffered_write? But even that already has the iocb, so I'm not sure why we need that change to start with.
On 5/31/22 12:04 AM, Christoph Hellwig wrote: > On Thu, May 26, 2022 at 10:38:38AM -0700, Stefan Roesch wrote: >> This changes the function signature of the function xfs_ilock_iocb(): >> - the parameter iocb is replaced with ip, passing in an xfs_inode >> - the parameter iocb_flags is added to be able to pass in the iocb flags >> >> This allows to call the function from xfs_file_buffered_writes. > > xfs_file_buffered_write? But even that already has the iocb, so I'm > not sure why we need that change to start with. Yes xfs_file_buffered_write(). The problem is that xfs_iolock_iocb uses: iocb->ki_filp->f_inode, but xfs_file_buffered_write: iocb->ki_ki_filp->f_mapping->host This requires to pass in the xfs_inode *.
On Tue, May 31, 2022 at 12:15:19PM -0700, Stefan Roesch wrote: > The problem is that xfs_iolock_iocb uses: iocb->ki_filp->f_inode, > but xfs_file_buffered_write: iocb->ki_ki_filp->f_mapping->host > > This requires to pass in the xfs_inode *. Both must be the same. The indirection only matters for device files (and coda).
On 5/31/22 10:26 PM, Christoph Hellwig wrote: > On Tue, May 31, 2022 at 12:15:19PM -0700, Stefan Roesch wrote: >> The problem is that xfs_iolock_iocb uses: iocb->ki_filp->f_inode, >> but xfs_file_buffered_write: iocb->ki_ki_filp->f_mapping->host >> >> This requires to pass in the xfs_inode *. > > Both must be the same. The indirection only matters for device files > (and coda). I verified it. The patch is no longer needed. I will remove the patch.
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 5bddb1e9e0b3..50dea07f5e56 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -190,14 +190,13 @@ xfs_file_fsync( return error; } -static int +static inline int xfs_ilock_iocb( - struct kiocb *iocb, + struct xfs_inode *ip, + int iocb_flags, unsigned int lock_mode) { - struct xfs_inode *ip = XFS_I(file_inode(iocb->ki_filp)); - - if (iocb->ki_flags & IOCB_NOWAIT) { + if (iocb_flags & IOCB_NOWAIT) { if (!xfs_ilock_nowait(ip, lock_mode)) return -EAGAIN; } else { @@ -222,7 +221,7 @@ xfs_file_dio_read( file_accessed(iocb->ki_filp); - ret = xfs_ilock_iocb(iocb, XFS_IOLOCK_SHARED); + ret = xfs_ilock_iocb(ip, iocb->ki_flags, XFS_IOLOCK_SHARED); if (ret) return ret; ret = iomap_dio_rw(iocb, to, &xfs_read_iomap_ops, NULL, 0, 0); @@ -244,7 +243,7 @@ xfs_file_dax_read( if (!iov_iter_count(to)) return 0; /* skip atime */ - ret = xfs_ilock_iocb(iocb, XFS_IOLOCK_SHARED); + ret = xfs_ilock_iocb(ip, iocb->ki_flags, XFS_IOLOCK_SHARED); if (ret) return ret; ret = dax_iomap_rw(iocb, to, &xfs_read_iomap_ops); @@ -264,7 +263,7 @@ xfs_file_buffered_read( trace_xfs_file_buffered_read(iocb, to); - ret = xfs_ilock_iocb(iocb, XFS_IOLOCK_SHARED); + ret = xfs_ilock_iocb(ip, iocb->ki_flags, XFS_IOLOCK_SHARED); if (ret) return ret; ret = generic_file_read_iter(iocb, to); @@ -343,7 +342,7 @@ xfs_file_write_checks( if (*iolock == XFS_IOLOCK_SHARED && !IS_NOSEC(inode)) { xfs_iunlock(ip, *iolock); *iolock = XFS_IOLOCK_EXCL; - error = xfs_ilock_iocb(iocb, *iolock); + error = xfs_ilock_iocb(ip, iocb->ki_flags, *iolock); if (error) { *iolock = 0; return error; @@ -516,7 +515,7 @@ xfs_file_dio_write_aligned( int iolock = XFS_IOLOCK_SHARED; ssize_t ret; - ret = xfs_ilock_iocb(iocb, iolock); + ret = xfs_ilock_iocb(ip, iocb->ki_flags, iolock); if (ret) return ret; ret = xfs_file_write_checks(iocb, from, &iolock); @@ -583,7 +582,7 @@ xfs_file_dio_write_unaligned( flags = IOMAP_DIO_FORCE_WAIT; } - ret = xfs_ilock_iocb(iocb, iolock); + ret = xfs_ilock_iocb(ip, iocb->ki_flags, iolock); if (ret) return ret; @@ -659,7 +658,7 @@ xfs_file_dax_write( ssize_t ret, error = 0; loff_t pos; - ret = xfs_ilock_iocb(iocb, iolock); + ret = xfs_ilock_iocb(ip, iocb->ki_flags, iolock); if (ret) return ret; ret = xfs_file_write_checks(iocb, from, &iolock);
This changes the function signature of the function xfs_ilock_iocb(): - the parameter iocb is replaced with ip, passing in an xfs_inode - the parameter iocb_flags is added to be able to pass in the iocb flags This allows to call the function from xfs_file_buffered_writes. All the callers are changed accordingly. Signed-off-by: Stefan Roesch <shr@fb.com> --- fs/xfs/xfs_file.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-)