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| author | David Zafman <david.zafman@inktank.com> | 2012-12-03 19:14:05 -0800 |
|---|---|---|
| committer | Alex Elder <elder@inktank.com> | 2012-12-13 08:13:09 -0600 |
| commit | 8884d53dd63b1d9315b343564fcbe1ede004a99e (patch) | |
| tree | 9826a8ce6cac8b7c1b0fe27ca50a81572d69c59c /fs/ceph/addr.c | |
| parent | 0e5e1774a92e6fe9c511585de8f078b4c4c68dbb (diff) | |
| download | lwn-8884d53dd63b1d9315b343564fcbe1ede004a99e.tar.gz lwn-8884d53dd63b1d9315b343564fcbe1ede004a99e.zip | |
libceph: Unlock unprocessed pages in start_read() error path
Function start_read() can get an error before processing all pages.
It must not only release the remaining pages, but unlock them too.
This fixes http://tracker.newdream.net/issues/3370
Signed-off-by: David Zafman <david.zafman@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
Diffstat (limited to 'fs/ceph/addr.c')
| -rw-r--r-- | fs/ceph/addr.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 21a07187df05..8e8a818cba07 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -267,6 +267,14 @@ static void finish_read(struct ceph_osd_request *req, struct ceph_msg *msg) kfree(req->r_pages); } +static void ceph_unlock_page_vector(struct page **pages, int num_pages) +{ + int i; + + for (i = 0; i < num_pages; i++) + unlock_page(pages[i]); +} + /* * start an async read(ahead) operation. return nr_pages we submitted * a read for on success, or negative error code. @@ -347,6 +355,7 @@ static int start_read(struct inode *inode, struct list_head *page_list, int max) return nr_pages; out_pages: + ceph_unlock_page_vector(pages, nr_pages); ceph_release_page_vector(pages, nr_pages); out: ceph_osdc_put_request(req); |