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staging/lustre/llite: Add exception entry check after radix_tree 

We need to check for an exception entry after radix_tree lookup.

Signed-off-by: Yang Sheng <yang.sheng@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Reviewed-on: http://review.whamcloud.com/10709
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5162
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yang Sheng 2015-02-01 21:52:16 -05:00 committed by Greg Kroah-Hartman
parent 7dd1107ad3
commit 437dfb201a
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/lustre/lustre/llite/dir.c
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@ -278,7 +278,7 @@ static struct page *ll_dir_page_locate(struct inode *dir, __u64 *hash,
spin_lock_irq(&mapping->tree_lock);
found = radix_tree_gang_lookup(&mapping->page_tree,
(void **)&page, offset, 1);
if (found > 0) {
if (found > 0 && !radix_tree_exceptional_entry(page)) {
struct lu_dirpage *dp;
page_cache_get(page);