Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [ 26/46] ext4: fix xattr block allocation/release with bigalloc | Date | Fri, 1 Mar 2013 11:45:14 -0800 |
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3.4-stable review patch. If anyone has any objections, please let me know.
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From: Lukas Czerner <lczerner@redhat.com>
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>
--- fs/ext4/xattr.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
--- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -495,7 +495,7 @@ 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)); } @@ -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:
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