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-rw-r--r--fs/btrfs/inode.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 5b68330f858..1eacc78f661 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -5103,6 +5103,7 @@ static long btrfs_fallocate(struct inode *inode, int mode,
u64 mask = BTRFS_I(inode)->root->sectorsize - 1;
struct extent_map *em;
struct btrfs_trans_handle *trans;
+ struct btrfs_root *root;
int ret;
alloc_start = offset & ~mask;
@@ -5121,6 +5122,13 @@ static long btrfs_fallocate(struct inode *inode, int mode,
goto out;
}
+ root = BTRFS_I(inode)->root;
+
+ ret = btrfs_check_data_free_space(root, inode,
+ alloc_end - alloc_start);
+ if (ret)
+ goto out;
+
locked_end = alloc_end - 1;
while (1) {
struct btrfs_ordered_extent *ordered;
@@ -5128,7 +5136,7 @@ static long btrfs_fallocate(struct inode *inode, int mode,
trans = btrfs_start_transaction(BTRFS_I(inode)->root, 1);
if (!trans) {
ret = -EIO;
- goto out;
+ goto out_free;
}
/* the extent lock is ordered inside the running
@@ -5189,6 +5197,8 @@ static long btrfs_fallocate(struct inode *inode, int mode,
GFP_NOFS);
btrfs_end_transaction(trans, BTRFS_I(inode)->root);
+out_free:
+ btrfs_free_reserved_data_space(root, inode, alloc_end - alloc_start);
out:
mutex_unlock(&inode->i_mutex);
return ret;