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Btrfs: Implement basic support for -ENOSPC

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This is intended to prevent accidentally filling the drive.  A determined
user can still make things oops.

It includes some accounting of the current bytes under delayed allocation,
but this will change as things get optimized

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-12-21 16:27:21 -05:00
parent 01f4665805
commit 1832a6d5ee
6 changed files with 193 additions and 28 deletions
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3
fs/btrfs/extent_map.h
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@@ -115,7 +115,8 @@ int __init extent_map_init(void);
void extent_map_exit(void);
u64 count_range_bits(struct extent_map_tree *tree,
u64 *start, u64 max_bytes, unsigned long bits);
u64 *start, u64 search_end,
u64 max_bytes, unsigned long bits);
int test_range_bit(struct extent_map_tree *tree, u64 start, u64 end,
int bits, int filled);