linux-ext4 - [PATCH 6/8] ext4: move s_reserved_gdt_blocks and addressable checking into ext4_check

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Date:   Thu, 23 Mar 2023 22:05:15 +0800
From:   Jason Yan <yanaijie@...wei.com>
To:     <tytso@....edu>, <adilger.kernel@...ger.ca>, <jack@...e.cz>,
        <ritesh.list@...il.com>, <lczerner@...hat.com>,
        <linux-ext4@...r.kernel.org>
CC:     Jason Yan <yanaijie@...wei.com>
Subject: [PATCH 6/8] ext4: move s_reserved_gdt_blocks and addressable checking into ext4_check_geometry()

These two checkings are more suitable to be put into
ext4_check_geometry() rather than spreading outside.

Signed-off-by: Jason Yan <yanaijie@...wei.com>
---
 fs/ext4/super.c | 38 +++++++++++++++++++-------------------
 1 file changed, 19 insertions(+), 19 deletions(-)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 66f0da764d58..6c9ffbe5095f 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4718,6 +4718,25 @@ static int ext4_check_geometry(struct super_block *sb,
 {
 	struct ext4_sb_info *sbi = EXT4_SB(sb);
 	__u64 blocks_count;
+	int err;
+
+	if (le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks) > (sb->s_blocksize / 4)) {
+		ext4_msg(sb, KERN_ERR,
+			 "Number of reserved GDT blocks insanely large: %d",
+			 le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks));
+		return -EINVAL;
+	}
+	/*
+	 * Test whether we have more sectors than will fit in sector_t,
+	 * and whether the max offset is addressable by the page cache.
+	 */
+	err = generic_check_addressable(sb->s_blocksize_bits,
+					ext4_blocks_count(es));
+	if (err) {
+		ext4_msg(sb, KERN_ERR, "filesystem"
+			 " too large to mount safely on this system");
+		return err;
+	}
 
 	/* check blocks count against device size */
 	blocks_count = sb_bdev_nr_blocks(sb);
@@ -5174,13 +5193,6 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb)
 	if (ext4_check_feature_compatibility(sb, es, silent))
 		goto failed_mount;
 
-	if (le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks) > (sb->s_blocksize / 4)) {
-		ext4_msg(sb, KERN_ERR,
-			 "Number of reserved GDT blocks insanely large: %d",
-			 le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks));
-		goto failed_mount;
-	}
-
 	if (sbi->s_daxdev) {
 		if (sb->s_blocksize == PAGE_SIZE)
 			set_bit(EXT4_FLAGS_BDEV_IS_DAX, &sbi->s_ext4_flags);
@@ -5252,18 +5264,6 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb)
 	if (ext4_handle_clustersize(sb))
 		goto failed_mount;
 
-	/*
-	 * Test whether we have more sectors than will fit in sector_t,
-	 * and whether the max offset is addressable by the page cache.
-	 */
-	err = generic_check_addressable(sb->s_blocksize_bits,
-					ext4_blocks_count(es));
-	if (err) {
-		ext4_msg(sb, KERN_ERR, "filesystem"
-			 " too large to mount safely on this system");
-		goto failed_mount;
-	}
-
 	if (ext4_check_geometry(sb, es))
 		goto failed_mount;
 
-- 
2.31.1