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| author | Alex Shi <alex.shi@linaro.org> | 2017-10-28 04:06:55 (GMT) |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2017-10-28 04:06:55 (GMT) |
| commit | 2350bc148253bbd1a6c2c1ca062a6405c40ed0db (patch) | |
| tree | 83e7f4cc5557fbb6e00e359113056fa136c52153 /fs/xfs/xfs_reflink.c | |
| parent | 7b2f683fe2733153307cc6b870bcb37c87331cc9 (diff) | |
| parent | d785062ef20f9b2cd8cedcafea55ca8264f25f3e (diff) | |
| download | linux-2350bc148253bbd1a6c2c1ca062a6405c40ed0db.tar.xz | |
Merge tag 'v4.9.59' into linux-linaro-lsk-v4.9
This is the 4.9.59 stable release
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 0015c19..17d3c96 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -767,7 +767,13 @@ xfs_reflink_end_cow( /* If there is a hole at end_fsb - 1 go to the previous extent */ if (eof || 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_bmbt_get_all(xfs_iext_get_ext(ifp, --idx), &got); } @@ -841,6 +847,7 @@ next_extent: out_defer: xfs_defer_cancel(&dfops); +out_cancel: xfs_trans_cancel(tp); xfs_iunlock(ip, XFS_ILOCK_EXCL); out: |