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authorLukas Czerner <lczerner@redhat.com>2013-02-18 12:12:07 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-03-04 06:06:42 +0800
commit19c9740ba7362357bde91267a0aa5109a809cd3e (patch)
tree3c1b86dff72d5b9f73584a42f70b6183c6a3ad36 /fs/ext4/xattr.c
parent51e26006d1c9d5a2609d1bb6b7899cd86f92eed9 (diff)
ext4: fix xattr block allocation/release with bigalloc
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@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ext4/xattr.c')
-rw-r--r--fs/ext4/xattr.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index e88748e55c0f..e712a8cb1653 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -495,7 +495,7 @@ ext4_xattr_release_block(handle_t *handle, struct inode *inode,
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));
}
@@ -784,7 +784,8 @@ 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,
@@ -880,7 +881,7 @@ cleanup:
return error;
cleanup_dquot:
- dquot_free_block(inode, 1);
+ dquot_free_block(inode, EXT4_C2B(EXT4_SB(sb), 1));
goto cleanup;
bad_block: