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| author | Lachlan McIlroy <lachlan@sgi.com> | 2008-06-27 13:33:11 +1000 |
|---|---|---|
| committer | Niv Sardi <xaiki@debian.org> | 2008-07-28 16:59:13 +1000 |
| commit | 313b5c767a044c7a0db5e773cb7aea70383b2627 (patch) | |
| tree | 5752234a32bbfacd7b0dd01365986af76396c18b /fs/xfs/xfs_bmap_btree.c | |
| parent | b877e3d37dda0154868a3c78f02f38a1ec14ce79 (diff) | |
| download | linux-313b5c767a044c7a0db5e773cb7aea70383b2627.tar.gz linux-313b5c767a044c7a0db5e773cb7aea70383b2627.tar.bz2 linux-313b5c767a044c7a0db5e773cb7aea70383b2627.zip | |
[XFS] Allow xfs_bmbt_split() to fallback to the lowspace allocator
algorithm
If xfs_bmbt_split() cannot find an AG with sufficient free space to
satisfy a full extent btree split then fall back to the lowspace allocator
algorithm.
SGI-PV: 983338
SGI-Modid: xfs-linux-melb:xfs-kern:31359a
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: David Chinner <dgc@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_bmap_btree.c')
| -rw-r--r-- | fs/xfs/xfs_bmap_btree.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/xfs/xfs_bmap_btree.c b/fs/xfs/xfs_bmap_btree.c index 1140cef4ba99..23efad29a5cd 100644 --- a/fs/xfs/xfs_bmap_btree.c +++ b/fs/xfs/xfs_bmap_btree.c @@ -1525,6 +1525,21 @@ xfs_bmbt_split( XFS_BMBT_TRACE_CURSOR(cur, ERROR); return error; } + if (args.fsbno == NULLFSBLOCK && args.minleft) { + /* + * Could not find an AG with enough free space to satisfy + * a full btree split. Try again without minleft and if + * successful activate the lowspace algorithm. + */ + args.fsbno = 0; + args.type = XFS_ALLOCTYPE_FIRST_AG; + args.minleft = 0; + if ((error = xfs_alloc_vextent(&args))) { + XFS_BMBT_TRACE_CURSOR(cur, ERROR); + return error; + } + cur->bc_private.b.flist->xbf_low = 1; + } if (args.fsbno == NULLFSBLOCK) { XFS_BMBT_TRACE_CURSOR(cur, EXIT); *stat = 0; |