foo.diff

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 5b95e18..4296a6f 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2111,7 +2111,7 @@ static int
 ext4_ext_in_cache(struct inode *inode, ext4_lblk_t block,
 			struct ext4_extent *ex)
 {
-	struct ext4_ext_cache cex = {0, 0, 0};
+	struct ext4_ext_cache cex;
 	int ret = 0;
 
 	if (ext4_ext_check_cache(inode, block, &cex)) {
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 282d6f9..9727522 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -123,7 +123,6 @@ long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 			else
 				ext4_clear_inode_flag(inode, i);
 		}
-		ei->i_flags = flags;
 
 		ext4_set_inode_flags(inode);
 		inode->i_ctime = ext4_current_time(inode);
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 39c1b63..cdfc763 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4998,8 +4998,9 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
 	end = start + (range->len >> sb->s_blocksize_bits) - 1;
 	minlen = range->minlen >> sb->s_blocksize_bits;
 
-	if (unlikely(minlen > EXT4_CLUSTERS_PER_GROUP(sb)) ||
-	    unlikely(start >= max_blks))
+	if (minlen > EXT4_CLUSTERS_PER_GROUP(sb) ||
+	    start >= max_blks ||
+	    range->len < sb->s_blocksize)
 		return -EINVAL;
 	if (end >= max_blks)
 		end = max_blks - 1;