ext4: make variable "count" signed

Since dx_make_map() may return -EFSCORRUPTED now, so change "count" to
be a signed integer so we can correctly check for an error code returned
by dx_make_map().

Fixes: 617f37af334e ("ext4: verify dir block before splitting it")
Cc: stable@kernel.org
Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20220530100047.537598-1-dingxiang@cmss.chinamobile.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 47d0ca4c795b6ec761697d5560b1a77dfbfeb840..db4ba99d1cebeb72a6e45622cfc8f2e024f53a2b 100644 (file)
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1929,7 +1929,8 @@ static struct ext4_dir_entry_2 *do_split(handle_t *handle, struct inode *dir,
                        struct dx_hash_info *hinfo)
 {
        unsigned blocksize = dir->i_sb->s_blocksize;
-       unsigned count, continued;
+       unsigned continued;
+       int count;
        struct buffer_head *bh2;
        ext4_lblk_t newblock;
        u32 hash2;