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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-09 09:05:05 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-09 09:05:05 +0200 |
| commit | 9424e8b1fedbaff34df187fdb87f9a9cba2d0ff2 (patch) | |
| tree | 7a595ccc67ae0cd9a414383ff2f6ede291c7dc18 /fs/xfs/xfs_reflink.c | |
| parent | bccf1da3546cc7aeefadc63cd4356ab8dc04c1e3 (diff) | |
| parent | 8a5776a5f49812d29fe4b2d0a2d71675c3facf3f (diff) | |
| download | linux-9424e8b1fedbaff34df187fdb87f9a9cba2d0ff2.tar.bz2 | |
Merge 4.14-rc4 into tty-next
We want the tty/serial fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/xfs/xfs_reflink.c')
| -rw-r--r-- | fs/xfs/xfs_reflink.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index 3246815c24d6..37e603bf1591 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -736,7 +736,13 @@ xfs_reflink_end_cow( /* If there is a hole at end_fsb - 1 go to the previous extent */ if (!xfs_iext_lookup_extent(ip, ifp, end_fsb - 1, &idx, &got) || got.br_startoff > end_fsb) { - ASSERT(idx > 0); + /* + * In case of racing, overlapping AIO writes no COW extents + * might be left by the time I/O completes for the loser of + * the race. In that case we are done. + */ + if (idx <= 0) + goto out_cancel; xfs_iext_get_extent(ifp, --idx, &got); } @@ -809,6 +815,7 @@ next_extent: out_defer: xfs_defer_cancel(&dfops); +out_cancel: xfs_trans_cancel(tp); xfs_iunlock(ip, XFS_ILOCK_EXCL); out: |