diff options
| -rw-r--r-- | fs/ext4/extents.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 08f5afc95c88..fc76bda13852 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4663,6 +4663,7 @@ static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset, int ret = 0; int ret2 = 0; int retries = 0; + int depth = 0; struct ext4_map_blocks map; unsigned int credits; loff_t epos; @@ -4681,9 +4682,24 @@ static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset, * credits to insert 1 extent into extent tree */ credits = ext4_chunk_trans_blocks(inode, len); + /* + * We can only call ext_depth() on extent based inodes + */ + if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) + depth = ext_depth(inode); + else + depth = -1; retry: while (ret >= 0 && len) { + /* + * Recalculate credits when extent tree depth changes. + */ + if (depth >= 0 && depth != ext_depth(inode)) { + credits = ext4_chunk_trans_blocks(inode, len); + depth = ext_depth(inode); + } + handle = ext4_journal_start(inode, EXT4_HT_MAP_BLOCKS, credits); if (IS_ERR(handle)) { |