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-rw-r--r--fs/hfs/extent.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/hfs/extent.c b/fs/hfs/extent.c
index 5d0182654580..263d5028d9d1 100644
--- a/fs/hfs/extent.c
+++ b/fs/hfs/extent.c
@@ -117,6 +117,10 @@ static int __hfs_ext_write_extent(struct inode *inode, struct hfs_find_data *fd)
if (HFS_I(inode)->flags & HFS_FLG_EXT_NEW) {
if (res != -ENOENT)
return res;
+ /* Fail early and avoid ENOSPC during the btree operation */
+ res = hfs_bmap_reserve(fd->tree, fd->tree->depth + 1);
+ if (res)
+ return res;
hfs_brec_insert(fd, HFS_I(inode)->cached_extents, sizeof(hfs_extent_rec));
HFS_I(inode)->flags &= ~(HFS_FLG_EXT_DIRTY|HFS_FLG_EXT_NEW);
} else {
@@ -300,7 +304,7 @@ int hfs_free_fork(struct super_block *sb, struct hfs_cat_file *file, int type)
return 0;
blocks = 0;
- for (i = 0; i < 3; extent++, i++)
+ for (i = 0; i < 3; i++)
blocks += be16_to_cpu(extent[i].count);
res = hfs_free_extents(sb, extent, blocks, blocks);
@@ -341,7 +345,9 @@ int hfs_get_block(struct inode *inode, sector_t block,
ablock = (u32)block / HFS_SB(sb)->fs_div;
if (block >= HFS_I(inode)->fs_blocks) {
- if (block > HFS_I(inode)->fs_blocks || !create)
+ if (!create)
+ return 0;
+ if (block > HFS_I(inode)->fs_blocks)
return -EIO;
if (ablock >= HFS_I(inode)->alloc_blocks) {
res = hfs_extend_file(inode);