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| author | Christoph Hellwig <hch@infradead.org> | 2012-08-07 02:02:02 -0400 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2012-08-23 14:48:32 -0500 |
| commit | 761290309939743ddf97e2bd94c6da18c6436b79 (patch) | |
| tree | 9e6b41c6e053608379ffcb10c1a71056cc1cfcac /fs | |
| parent | 0b9e3f6d84ce619f697bb622d9165cccaa93d67c (diff) | |
| download | linux-761290309939743ddf97e2bd94c6da18c6436b79.tar.gz linux-761290309939743ddf97e2bd94c6da18c6436b79.tar.bz2 linux-761290309939743ddf97e2bd94c6da18c6436b79.zip | |
xfs: unlock the AGI buffer when looping in xfs_dialloc
Also update some commens in the area to make the code easier to read.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/xfs/xfs_ialloc.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c index 21e37b55f7e5..5aceb3f8ecd6 100644 --- a/fs/xfs/xfs_ialloc.c +++ b/fs/xfs/xfs_ialloc.c @@ -962,23 +962,22 @@ xfs_dialloc( if (!pag->pagi_freecount && !okalloc) goto nextag; + /* + * Then read in the AGI buffer and recheck with the AGI buffer + * lock held. + */ error = xfs_ialloc_read_agi(mp, tp, agno, &agbp); if (error) goto out_error; - /* - * Once the AGI has been read in we have to recheck - * pagi_freecount with the AGI buffer lock held. - */ if (pag->pagi_freecount) { xfs_perag_put(pag); goto out_alloc; } - if (!okalloc) { - xfs_trans_brelse(tp, agbp); - goto nextag; - } + if (!okalloc) + goto nextag_relse_buffer; + error = xfs_ialloc_ag_alloc(tp, agbp, &ialloced); if (error) { @@ -1007,6 +1006,8 @@ xfs_dialloc( return 0; } +nextag_relse_buffer: + xfs_trans_brelse(tp, agbp); nextag: xfs_perag_put(pag); if (++agno == mp->m_sb.sb_agcount) |