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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 5b68330f8585..1eacc78f6614 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -5103,6 +5103,7 @@ static long btrfs_fallocate(struct inode *inode, int mode,
5103 u64 mask = BTRFS_I(inode)->root->sectorsize - 1; 5103 u64 mask = BTRFS_I(inode)->root->sectorsize - 1;
5104 struct extent_map *em; 5104 struct extent_map *em;
5105 struct btrfs_trans_handle *trans; 5105 struct btrfs_trans_handle *trans;
5106 struct btrfs_root *root;
5106 int ret; 5107 int ret;
5107 5108
5108 alloc_start = offset & ~mask; 5109 alloc_start = offset & ~mask;
@@ -5121,6 +5122,13 @@ static long btrfs_fallocate(struct inode *inode, int mode,
5121 goto out; 5122 goto out;
5122 } 5123 }
5123 5124
5125 root = BTRFS_I(inode)->root;
5126
5127 ret = btrfs_check_data_free_space(root, inode,
5128 alloc_end - alloc_start);
5129 if (ret)
5130 goto out;
5131
5124 locked_end = alloc_end - 1; 5132 locked_end = alloc_end - 1;
5125 while (1) { 5133 while (1) {
5126 struct btrfs_ordered_extent *ordered; 5134 struct btrfs_ordered_extent *ordered;
@@ -5128,7 +5136,7 @@ static long btrfs_fallocate(struct inode *inode, int mode,
5128 trans = btrfs_start_transaction(BTRFS_I(inode)->root, 1); 5136 trans = btrfs_start_transaction(BTRFS_I(inode)->root, 1);
5129 if (!trans) { 5137 if (!trans) {
5130 ret = -EIO; 5138 ret = -EIO;
5131 goto out; 5139 goto out_free;
5132 } 5140 }
5133 5141
5134 /* the extent lock is ordered inside the running 5142 /* the extent lock is ordered inside the running
@@ -5189,6 +5197,8 @@ static long btrfs_fallocate(struct inode *inode, int mode,
5189 GFP_NOFS); 5197 GFP_NOFS);
5190 5198
5191 btrfs_end_transaction(trans, BTRFS_I(inode)->root); 5199 btrfs_end_transaction(trans, BTRFS_I(inode)->root);
5200out_free:
5201 btrfs_free_reserved_data_space(root, inode, alloc_end - alloc_start);
5192out: 5202out:
5193 mutex_unlock(&inode->i_mutex); 5203 mutex_unlock(&inode->i_mutex);
5194 return ret; 5204 return ret;