fix ufs_get_locked_folio() breakage

filemap_lock_folio() returns ERR_PTR(-ENOENT) if the thing is not
in cache - not NULL like find_lock_page() used to.

Fixes: 5fb7bd50b351 "ufs: add ufs_get_locked_folio and ufs_put_locked_folio"
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/ufs/util.c b/fs/ufs/util.c
index 13ba34e6d64ff30f51de4367f3aa08f12796786e..2acf191eb89ede0a7df7d667e948f74228cc2ac6 100644 (file)
--- a/fs/ufs/util.c
+++ b/fs/ufs/util.c
@@ -245,7 +245,7 @@ struct folio *ufs_get_locked_folio(struct address_space *mapping,
 {
        struct inode *inode = mapping->host;
        struct folio *folio = filemap_lock_folio(mapping, index);
-       if (!folio) {
+       if (IS_ERR(folio)) {
                folio = read_mapping_folio(mapping, index, NULL);
 
                if (IS_ERR(folio)) {