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| author |   Darrick J. Wong <darrick.wong@oracle.com> | 2020-01-23 17:01:19 -0800 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2020-01-26 14:32:26 -0800 |
| commit | f48e2df8a877ca1c19d92cfd7e74cc5956fa84cb (patch) | |
| tree | f3643a33c702847898c6717d7c787c6f44ffc478 /fs/xfs/xfs_filestream.c | |
| parent | xfs: remove the xfs_btree_get_buf[ls] functions (diff) | |
| download | linux-dev-f48e2df8a877ca1c19d92cfd7e74cc5956fa84cb.tar.xz linux-dev-f48e2df8a877ca1c19d92cfd7e74cc5956fa84cb.zip | |
xfs: make xfs_*read_agf return EAGAIN to ALLOC_FLAG_TRYLOCK callers
Refactor xfs_read_agf and xfs_alloc_read_agf to return EAGAIN if the
caller passed TRYLOCK and we weren't able to get the lock; and change
the callers to recognize this.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | fs/xfs/xfs_filestream.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c index 5f12b5d8527a..1a88025e68a3 100644 --- a/fs/xfs/xfs_filestream.c +++ b/fs/xfs/xfs_filestream.c @@ -159,16 +159,15 @@ xfs_filestream_pick_ag( if (!pag->pagf_init) { err = xfs_alloc_pagf_init(mp, NULL, ag, trylock); - if (err && !trylock) { + if (err) { xfs_perag_put(pag); - return err; + if (err != -EAGAIN) + return err; + /* Couldn't lock the AGF, skip this AG. */ + continue; } } - /* Might fail sometimes during the 1st pass with trylock set. */ - if (!pag->pagf_init) - goto next_ag; - /* Keep track of the AG with the most free blocks. */ if (pag->pagf_freeblks > maxfree) { maxfree = pag->pagf_freeblks; |