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| author | Chris Mason <chris.mason@oracle.com> | 2008-04-14 09:46:10 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 11:04:01 -0400 |
| commit | 98d20f67cf99ccda638dbcdf7b3a9ee0a428d932 (patch) | |
| tree | 2cd417558d34777ee8aabc950ccc0993d542d1b0 /fs/btrfs/inode.c | |
| parent | 73f61b2a6459df982cb4faf0e5cf5ac8b153aaff (diff) | |
| download | lwn-98d20f67cf99ccda638dbcdf7b3a9ee0a428d932.tar.gz lwn-98d20f67cf99ccda638dbcdf7b3a9ee0a428d932.zip | |
Add a min size parameter to btrfs_alloc_extent
On huge machines, delayed allocation may try to allocate massive extents.
This change allows btrfs_alloc_extent to return something smaller than
the caller asked for, and the data allocation routines will loop over
the allocations until it fills the whole delayed alloc.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 46f54dfa2b0a..7869c0157a1f 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -125,6 +125,7 @@ static int cow_file_range(struct inode *inode, u64 start, u64 end) while(num_bytes > 0) { cur_alloc_size = min(num_bytes, root->fs_info->max_extent); ret = btrfs_alloc_extent(trans, root, cur_alloc_size, + root->sectorsize, root->root_key.objectid, trans->transid, inode->i_ino, start, 0, @@ -133,6 +134,7 @@ static int cow_file_range(struct inode *inode, u64 start, u64 end) WARN_ON(1); goto out; } + cur_alloc_size = ins.offset; ret = btrfs_insert_file_extent(trans, root, inode->i_ino, start, ins.objectid, ins.offset, ins.offset); |