3.2-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lukas Czerner <lczerner@xxxxxxxxxx>
commit 1231b3a1eb5740192aeebf5344dd6d6da000febf upstream.
Currently when new xattr block is created or released we we would call
dquot_free_block() or dquot_alloc_block() respectively, among the else
decrementing or incrementing the number of blocks assigned to the
inode by one block.
This however does not work for bigalloc file system because we always
allocate/free the whole cluster so we have to count with that in
dquot_free_block() and dquot_alloc_block() as well.
Use the clusters-to-blocks conversion EXT4_C2B() when passing number of
blocks to the dquot_alloc/free functions to fix the problem.
The problem has been revealed by xfstests #117 (and possibly others).
Signed-off-by: Lukas Czerner <lczerner@xxxxxxxxxx>
Signed-off-by: "Theodore Ts'o" <tytso@xxxxxxx>
Reviewed-by: Eric Sandeen <sandeen@xxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
fs/ext4/xattr.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -496,7 +496,7 @@ ext4_xattr_release_block(handle_t *handl
error = ext4_handle_dirty_metadata(handle, inode, bh);
if (IS_SYNC(inode))
ext4_handle_sync(handle);
- dquot_free_block(inode, 1);
+ dquot_free_block(inode, EXT4_C2B(EXT4_SB(inode->i_sb), 1));
ea_bdebug(bh, "refcount now=%d; releasing",
le32_to_cpu(BHDR(bh)->h_refcount));
}
@@ -785,7 +785,8 @@ inserted:
else {
/* The old block is released after updating
the inode. */
- error = dquot_alloc_block(inode, 1);
+ error = dquot_alloc_block(inode,
+ EXT4_C2B(EXT4_SB(sb), 1));
if (error)
goto cleanup;
error = ext4_journal_get_write_access(handle,
@@ -881,7 +882,7 @@ cleanup:
return error;
cleanup_dquot:
- dquot_free_block(inode, 1);
+ dquot_free_block(inode, EXT4_C2B(EXT4_SB(sb), 1));
goto cleanup;
bad_block:
--
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