From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Tue, 12 Mar 2019 18:49:53 +0000 (-0700)
Subject: f2fs: give some messages for inline_xattr_size
X-Git-Tag: v5.1-rc1~25^2~4
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=70db5b04cbe19e5ae7e85ada2d3e82bcfdf90352;p=linux-2.6-block.git

f2fs: give some messages for inline_xattr_size

This patch adds some kernel messages when user sets wrong inline_xattr_size.

Fixes: 500e0b28ecd3 ("f2fs: fix to check inline_xattr_size boundary correctly")
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 42eb5c86330a..324938ec95f3 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -821,6 +821,8 @@ static int parse_options(struct super_block *sb, char *options)
 	}
 
 	if (test_opt(sbi, INLINE_XATTR_SIZE)) {
+		int min_size, max_size;
+
 		if (!f2fs_sb_has_extra_attr(sbi) ||
 			!f2fs_sb_has_flexible_inline_xattr(sbi)) {
 			f2fs_msg(sb, KERN_ERR,
@@ -834,15 +836,18 @@ static int parse_options(struct super_block *sb, char *options)
 					"set with inline_xattr option");
 			return -EINVAL;
 		}
-		if (F2FS_OPTION(sbi).inline_xattr_size <
-			sizeof(struct f2fs_xattr_header) / sizeof(__le32) ||
-			F2FS_OPTION(sbi).inline_xattr_size >
-			DEF_ADDRS_PER_INODE -
+
+		min_size = sizeof(struct f2fs_xattr_header) / sizeof(__le32);
+		max_size = DEF_ADDRS_PER_INODE -
 			F2FS_TOTAL_EXTRA_ATTR_SIZE / sizeof(__le32) -
 			DEF_INLINE_RESERVED_SIZE -
-			MIN_INLINE_DENTRY_SIZE / sizeof(__le32)) {
+			MIN_INLINE_DENTRY_SIZE / sizeof(__le32);
+
+		if (F2FS_OPTION(sbi).inline_xattr_size < min_size ||
+				F2FS_OPTION(sbi).inline_xattr_size > max_size) {
 			f2fs_msg(sb, KERN_ERR,
-					"inline xattr size is out of range");
+				"inline xattr size is out of range: %d ~ %d",
+				min_size, max_size);
 			return -EINVAL;
 		}
 	}