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authorEugene Dashevsky <eugene@ibrix.com>2008-10-18 20:27:59 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-20 08:52:38 -0700
commit6a897cf447a83c9c3fd1b85a1e525c02d6eada7d (patch)
treed31c7e566cafce2886bf57079bbb7eea738f8d10
parent960a22ae60c8a723bd17da3b929fe0bcea6d007e (diff)
downloadop-kernel-dev-6a897cf447a83c9c3fd1b85a1e525c02d6eada7d.zip
op-kernel-dev-6a897cf447a83c9c3fd1b85a1e525c02d6eada7d.tar.gz
ext3: fix ext3_dx_readdir hash collision handling
This fixes a bug where readdir() would return a directory entry twice if there was a hash collision in an hash tree indexed directory. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Eugene Dashevsky <eugene@ibrix.com> Signed-off-by: Mike Snitzer <msnitzer@ibrix.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/ext3/dir.c20
1 files changed, 15 insertions, 5 deletions
diff --git a/fs/ext3/dir.c b/fs/ext3/dir.c
index 2eea96e..28b681e 100644
--- a/fs/ext3/dir.c
+++ b/fs/ext3/dir.c
@@ -410,7 +410,7 @@ static int call_filldir(struct file * filp, void * dirent,
get_dtype(sb, fname->file_type));
if (error) {
filp->f_pos = curr_pos;
- info->extra_fname = fname->next;
+ info->extra_fname = fname;
return error;
}
fname = fname->next;
@@ -449,11 +449,21 @@ static int ext3_dx_readdir(struct file * filp,
* If there are any leftover names on the hash collision
* chain, return them first.
*/
- if (info->extra_fname &&
- call_filldir(filp, dirent, filldir, info->extra_fname))
- goto finished;
+ if (info->extra_fname) {
+ if (call_filldir(filp, dirent, filldir, info->extra_fname))
+ goto finished;
- if (!info->curr_node)
+ info->extra_fname = NULL;
+ info->curr_node = rb_next(info->curr_node);
+ if (!info->curr_node) {
+ if (info->next_hash == ~0) {
+ filp->f_pos = EXT3_HTREE_EOF;
+ goto finished;
+ }
+ info->curr_hash = info->next_hash;
+ info->curr_minor_hash = 0;
+ }
+ } else if (!info->curr_node)
info->curr_node = rb_first(&info->root);
while (1) {
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