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| author | Dmitry Monakhov <dmonakhov@openvz.org> | 2012-09-30 23:03:50 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2012-09-30 23:03:50 -0400 |
| commit | 6f2080e64487b9963f9c6ff8a252e1abce98f2d4 (patch) | |
| tree | e69e5b706895a52884cfc28f0fc4813c04a08344 | |
| parent | 02d262dffcf4c74e5c4612ee736bdb94f18ed5b9 (diff) | |
| download | linux-6f2080e64487b9963f9c6ff8a252e1abce98f2d4.tar.bz2 | |
ext4: fix ext_remove_space for punch_hole case
Inode is allowed to have empty leaf only if it this is blockless inode.
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| -rw-r--r-- | fs/ext4/extents.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 5920e75fc05f..c1fcf489e056 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -2589,7 +2589,7 @@ static int ext4_ext_remove_space(struct inode *inode, ext4_lblk_t start, struct ext4_ext_path *path = NULL; ext4_fsblk_t partial_cluster = 0; handle_t *handle; - int i = 0, err; + int i = 0, err = 0; ext_debug("truncate since %u to %u\n", start, end); @@ -2621,12 +2621,16 @@ again: return PTR_ERR(path); } depth = ext_depth(inode); + /* Leaf not may not exist only if inode has no blocks at all */ ex = path[depth].p_ext; if (!ex) { - ext4_ext_drop_refs(path); - kfree(path); - path = NULL; - goto cont; + if (depth) { + EXT4_ERROR_INODE(inode, + "path[%d].p_hdr == NULL", + depth); + err = -EIO; + } + goto out; } ee_block = le32_to_cpu(ex->ee_block); @@ -2658,8 +2662,6 @@ again: goto out; } } -cont: - /* * We start scanning from right side, freeing all the blocks * after i_size and walking into the tree depth-wise. |