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| author | Dave Chinner <dchinner@redhat.com> | 2015-06-22 10:04:31 +1000 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2015-06-22 10:04:31 +1000 |
| commit | 50adbcb4c4e6c94b3acaad2a5854b6ca57402115 (patch) | |
| tree | 2805620a13234e0284c98023eb86eac762dc9fa6 /fs/xfs/xfs_filestream.c | |
| parent | 5ebe6afaf0057ac3eaeb98defd5456894b446d22 (diff) | |
| download | lwn-50adbcb4c4e6c94b3acaad2a5854b6ca57402115.tar.gz lwn-50adbcb4c4e6c94b3acaad2a5854b6ca57402115.zip | |
xfs: xfs_alloc_fix_freelist() can use incore perag structures
At the moment, xfs_alloc_fix_freelist() uses a mix of per-ag based
access and agf buffer based access to freelist and space usage
information. However, once the AGF buffer is locked inside this
function, it is guaranteed that both the in-memory and on-disk
values are identical. xfs_alloc_fix_freelist() doesn't modify the
values in the structures directly, so it is a read-only user of the
infomration, and hence can use the per-ag structure exclusively for
determining what it should do.
This opens up an avenue for cleaning up a lot of duplicated logic
whose only difference is the structure it gets the data from, and in
doing so removes a lot of needless byte swapping overhead when
fixing up the free list.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_filestream.c')
| -rw-r--r-- | fs/xfs/xfs_filestream.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c index da82f1cb4b9b..9ac5eaad47bc 100644 --- a/fs/xfs/xfs_filestream.c +++ b/fs/xfs/xfs_filestream.c @@ -196,7 +196,8 @@ xfs_filestream_pick_ag( goto next_ag; } - longest = xfs_alloc_longest_free_extent(mp, pag); + longest = xfs_alloc_longest_free_extent(mp, pag, + XFS_MIN_FREELIST_PAG(pag, mp)); if (((minlen && longest >= minlen) || (!minlen && pag->pagf_freeblks >= minfree)) && (!pag->pagf_metadata || !(flags & XFS_PICK_USERDATA) || |