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authorTaesoo Kim <tsgatesv@gmail.com>2015-03-20 17:36:56 -0400
committerIlya Dryomov <idryomov@gmail.com>2015-04-20 18:55:34 +0300
commitc1d00b2d9c4fc821e33c5cdfbdbc32677cb0e2e0 (patch)
tree619b91acc56d2f807fdd979db42b226321e19ae8
parent1fe480235ad7236e8ea6c167af5a5d1ac24f8a88 (diff)
downloadlinux-c1d00b2d9c4fc821e33c5cdfbdbc32677cb0e2e0.tar.bz2
ceph: properly release page upon error
When ceph_update_writeable_page fails (including -EAGAIN), it unlocks (w/ unlock_page) the page but does not 'release' (w/ page_cache_release) properly. Upon error, properly set *pagep to NULL, indicating an error. Signed-off-by: Taesoo Kim <tsgatesv@gmail.com> Signed-off-by: Yan, Zheng <zyan@redhat.com>
-rw-r--r--fs/ceph/addr.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index fd5599d32362..e723482c5f37 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -1146,6 +1146,10 @@ static int ceph_write_begin(struct file *file, struct address_space *mapping,
inode, page, (int)pos, (int)len);
r = ceph_update_writeable_page(file, pos, len, page);
+ if (r < 0)
+ page_cache_release(page);
+ else
+ *pagep = page;
} while (r == -EAGAIN);
return r;