From: Wengang Wang Date: Tue, 12 Jul 2011 08:43:14 +0000 (+0800) Subject: ocfs2: make direntry invalid when deleting it X-Git-Tag: MMI-PSA29.97-13-9~17941^2~6 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8298524803339a9a8df053ebdfebc2975ec55be9;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git ocfs2: make direntry invalid when deleting it When we deleting a direntry from a directory, if it's the first in a block we invalid it by setting inode to 0; otherwise, we merge the deleted one to the prior and contiguous direntry. And we don't truncate directories. There is a problem for the later case since inode is not set to 0. This problem happens when the caller passes a file position as parameter to ocfs2_dir_foreach_blk(). If the position happens to point to a stale(not the first, deleted in betweens of ocfs2_dir_foreach_blk()s) direntry, we are not able to recognize its staleness. So that we treat it as a live one wrongly. The fix is to set inode to 0 in both cases indicating the direntry is stale. This won't introduce additional IOs. Signed-off-by: Wengang Wang Signed-off-by: Joel Becker --- diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c index 8582e3f4f120..3302088e1f04 100644 --- a/fs/ocfs2/dir.c +++ b/fs/ocfs2/dir.c @@ -1184,8 +1184,7 @@ static int __ocfs2_delete_entry(handle_t *handle, struct inode *dir, if (pde) le16_add_cpu(&pde->rec_len, le16_to_cpu(de->rec_len)); - else - de->inode = 0; + de->inode = 0; dir->i_version++; ocfs2_journal_dirty(handle, bh); goto bail;