diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-04-13 05:37:04 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-04-13 05:37:04 +0400 |
| commit | d6cf853d4d73c268fc8920ac4e812ee26a12847c (patch) | |
| tree | c909145638eb5c4897ea7e424759eb9b564ebe18 /fs/btrfs/extent-tree.c | |
| parent | 6a945f38be5f2c198853069a336c887a51d1a238 (diff) | |
| parent | 9f680ce04ea19dabbbafe01b57b61930a9b70741 (diff) | |
| download | linux-d6cf853d4d73c268fc8920ac4e812ee26a12847c.tar.xz | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
Btrfs: make sure the chunk allocator doesn't create zero length chunks
Btrfs: fix data enospc check overflow
Diffstat (limited to 'fs/btrfs/extent-tree.c')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 9e23ffea7f54..b34d32fdaaec 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -3235,7 +3235,8 @@ int btrfs_check_data_free_space(struct btrfs_root *root, struct inode *inode, u64 bytes) { struct btrfs_space_info *data_sinfo; - int ret = 0, committed = 0; + u64 used; + int ret = 0, committed = 0, flushed = 0; /* make sure bytes are sectorsize aligned */ bytes = (bytes + root->sectorsize - 1) & ~((u64)root->sectorsize - 1); @@ -3247,12 +3248,21 @@ int btrfs_check_data_free_space(struct btrfs_root *root, struct inode *inode, again: /* make sure we have enough space to handle the data first */ spin_lock(&data_sinfo->lock); - if (data_sinfo->total_bytes - data_sinfo->bytes_used - - data_sinfo->bytes_delalloc - data_sinfo->bytes_reserved - - data_sinfo->bytes_pinned - data_sinfo->bytes_readonly - - data_sinfo->bytes_may_use - data_sinfo->bytes_super < bytes) { + used = data_sinfo->bytes_used + data_sinfo->bytes_delalloc + + data_sinfo->bytes_reserved + data_sinfo->bytes_pinned + + data_sinfo->bytes_readonly + data_sinfo->bytes_may_use + + data_sinfo->bytes_super; + + if (used + bytes > data_sinfo->total_bytes) { struct btrfs_trans_handle *trans; + if (!flushed) { + spin_unlock(&data_sinfo->lock); + flush_delalloc(root, data_sinfo); + flushed = 1; + goto again; + } + /* * if we don't have enough free bytes in this space then we need * to alloc a new chunk. |