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| author | Christoph Hellwig <hch@lst.de> | 2020-01-15 09:11:17 -0800 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2020-01-15 22:13:11 -0800 |
| commit | 7b53b868a1812a9a6ab5e69249394bd37f29ce2c (patch) | |
| tree | 74c8def00ecd0a67f1fb645e1c6001f728e0b8a3 /fs/xfs | |
| parent | ca78eee7b4ac13b63f5e872f7c3a5ca66b2df8da (diff) | |
| download | linux-stable-7b53b868a1812a9a6ab5e69249394bd37f29ce2c.tar.gz linux-stable-7b53b868a1812a9a6ab5e69249394bd37f29ce2c.tar.bz2 linux-stable-7b53b868a1812a9a6ab5e69249394bd37f29ce2c.zip | |
xfs: fix IOCB_NOWAIT handling in xfs_file_dio_aio_read
Direct I/O reads can also be used with RWF_NOWAIT & co. Fix the inode
locking in xfs_file_dio_aio_read to take IOCB_NOWAIT into account.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_file.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index c93250108952..b8a4a3f29b36 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -187,7 +187,12 @@ xfs_file_dio_aio_read( file_accessed(iocb->ki_filp); - xfs_ilock(ip, XFS_IOLOCK_SHARED); + if (iocb->ki_flags & IOCB_NOWAIT) { + if (!xfs_ilock_nowait(ip, XFS_IOLOCK_SHARED)) + return -EAGAIN; + } else { + xfs_ilock(ip, XFS_IOLOCK_SHARED); + } ret = iomap_dio_rw(iocb, to, &xfs_read_iomap_ops, NULL, is_sync_kiocb(iocb)); xfs_iunlock(ip, XFS_IOLOCK_SHARED); |