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xfs: factor out code to find the longest free extent in the AG

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Signed-off-by: Dave Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Dave Chinner
2009-03-16 08:29:46 +01:00
committed by Christoph Hellwig
parent cb4c8cc1e9
commit 6cc87645e2
4 changed files with 31 additions and 22 deletions
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9
fs/xfs/xfs_filestream.c
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@@ -140,7 +140,7 @@ _xfs_filestream_pick_ag(
xfs_extlen_t minlen)
{
int err, trylock, nscan;
xfs_extlen_t delta, longest, need, free, minfree, maxfree = 0;
xfs_extlen_t longest, free, minfree, maxfree = 0;
xfs_agnumber_t ag, max_ag = NULLAGNUMBER;
struct xfs_perag *pag;
@@ -186,12 +186,7 @@ _xfs_filestream_pick_ag(
goto next_ag;
}
need = XFS_MIN_FREELIST_PAG(pag, mp);
delta = need > pag->pagf_flcount ? need - pag->pagf_flcount : 0;
longest = (pag->pagf_longest > delta) ?
(pag->pagf_longest - delta) :
(pag->pagf_flcount > 0 || pag->pagf_longest > 0);
longest = xfs_alloc_longest_free_extent(mp, pag);
if (((minlen && longest >= minlen) ||
(!minlen && pag->pagf_freeblks >= minfree)) &&
(!pag->pagf_metadata || !(flags & XFS_PICK_USERDATA) ||