ceph: fix incorrect kmalloc size of pagevec mempool

The kmalloc size of pagevec mempool is incorrectly calculated.
It misses the size of page pointer and only accounts the number for the array.

Fixes: a0102bda5bc0 ("ceph: move sb->wb_pagevec_pool to be a global mempool")
Signed-off-by: ethanwu <ethanwu@synology.com>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 885cb5d4e771a1eddc4865b4c87773680f46b382..0cdf84cd179128d118c7e9a0d34287c27859698d 100644 (file)
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -961,7 +961,8 @@ static int __init init_caches(void)
        if (!ceph_mds_request_cachep)
                goto bad_mds_req;
 
-       ceph_wb_pagevec_pool = mempool_create_kmalloc_pool(10, CEPH_MAX_WRITE_SIZE >> PAGE_SHIFT);
+       ceph_wb_pagevec_pool = mempool_create_kmalloc_pool(10,
+           (CEPH_MAX_WRITE_SIZE >> PAGE_SHIFT) * sizeof(struct page *));
        if (!ceph_wb_pagevec_pool)
                goto bad_pagevec_pool;