diff options
| author | Dave Chinner <david@fromorbit.com> | 2010-01-11 14:47:42 +0300 |
|---|---|---|
| committer | Alex Elder <aelder@sgi.com> | 2010-01-16 00:33:22 +0300 |
| commit | 4196ac08c023c6dab90c3fa460d9c06deaa304c4 (patch) | |
| tree | ec73915586a45d0a2d459014560138fd499180d9 /fs/xfs/xfs_filestream.c | |
| parent | a862e0fdcb8862aab2538ec2fc2f0dc07a625c59 (diff) | |
| download | linux-4196ac08c023c6dab90c3fa460d9c06deaa304c4.tar.xz | |
xfs: Convert filestreams code to use per-ag get/put routines
Use xfs_perag_get() and xfs_perag_put() in the filestreams code.
Signed-off-by: Dave Chinner <david@fromorbit.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_filestream.c')
| -rw-r--r-- | fs/xfs/xfs_filestream.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c index a631e1451abb..e61f2aa088a9 100644 --- a/fs/xfs/xfs_filestream.c +++ b/fs/xfs/xfs_filestream.c @@ -140,6 +140,7 @@ _xfs_filestream_pick_ag( int flags, xfs_extlen_t minlen) { + int streams, max_streams; int err, trylock, nscan; xfs_extlen_t longest, free, minfree, maxfree = 0; xfs_agnumber_t ag, max_ag = NULLAGNUMBER; @@ -155,15 +156,15 @@ _xfs_filestream_pick_ag( trylock = XFS_ALLOC_FLAG_TRYLOCK; for (nscan = 0; 1; nscan++) { - - TRACE_AG_SCAN(mp, ag, xfs_filestream_peek_ag(mp, ag)); - - pag = mp->m_perag + ag; + pag = xfs_perag_get(mp, ag); + TRACE_AG_SCAN(mp, ag, atomic_read(&pag->pagf_fstrms)); if (!pag->pagf_init) { err = xfs_alloc_pagf_init(mp, NULL, ag, trylock); - if (err && !trylock) + if (err && !trylock) { + xfs_perag_put(pag); return err; + } } /* Might fail sometimes during the 1st pass with trylock set. */ @@ -173,6 +174,7 @@ _xfs_filestream_pick_ag( /* Keep track of the AG with the most free blocks. */ if (pag->pagf_freeblks > maxfree) { maxfree = pag->pagf_freeblks; + max_streams = atomic_read(&pag->pagf_fstrms); max_ag = ag; } @@ -195,6 +197,8 @@ _xfs_filestream_pick_ag( /* Break out, retaining the reference on the AG. */ free = pag->pagf_freeblks; + streams = atomic_read(&pag->pagf_fstrms); + xfs_perag_put(pag); *agp = ag; break; } @@ -202,6 +206,7 @@ _xfs_filestream_pick_ag( /* Drop the reference on this AG, it's not usable. */ xfs_filestream_put_ag(mp, ag); next_ag: + xfs_perag_put(pag); /* Move to the next AG, wrapping to AG 0 if necessary. */ if (++ag >= mp->m_sb.sb_agcount) ag = 0; @@ -229,6 +234,7 @@ next_ag: if (max_ag != NULLAGNUMBER) { xfs_filestream_get_ag(mp, max_ag); TRACE_AG_PICK1(mp, max_ag, maxfree); + streams = max_streams; free = maxfree; *agp = max_ag; break; @@ -240,8 +246,7 @@ next_ag: return 0; } - TRACE_AG_PICK2(mp, startag, *agp, xfs_filestream_peek_ag(mp, *agp), - free, nscan, flags); + TRACE_AG_PICK2(mp, startag, *agp, streams, free, nscan, flags); return 0; } |