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Message-ID: <20220830120411.2371968-7-yanaijie@huawei.com>
Date: Tue, 30 Aug 2022 20:04:04 +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 06/13] ext4: factor out ext4_inode_info_init()
Factor out ext4_inode_info_init(). No functional change.
Signed-off-by: Jason Yan <yanaijie@...wei.com>
---
fs/ext4/super.c | 137 ++++++++++++++++++++++++++----------------------
1 file changed, 75 insertions(+), 62 deletions(-)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index d355eda2f184..458d146149b2 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4448,6 +4448,79 @@ static void ext4_fast_commit_init(struct super_block *sb)
sbi->s_fc_replay_state.fc_modified_inodes_used = 0;
}
+static int ext4_inode_info_init(struct super_block *sb,
+ struct ext4_super_block *es,
+ int blocksize)
+{
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+
+ if (le32_to_cpu(es->s_rev_level) == EXT4_GOOD_OLD_REV) {
+ sbi->s_inode_size = EXT4_GOOD_OLD_INODE_SIZE;
+ sbi->s_first_ino = EXT4_GOOD_OLD_FIRST_INO;
+ } else {
+ sbi->s_inode_size = le16_to_cpu(es->s_inode_size);
+ sbi->s_first_ino = le32_to_cpu(es->s_first_ino);
+ if (sbi->s_first_ino < EXT4_GOOD_OLD_FIRST_INO) {
+ ext4_msg(sb, KERN_ERR, "invalid first ino: %u",
+ sbi->s_first_ino);
+ return -EINVAL;
+ }
+ if ((sbi->s_inode_size < EXT4_GOOD_OLD_INODE_SIZE) ||
+ (!is_power_of_2(sbi->s_inode_size)) ||
+ (sbi->s_inode_size > blocksize)) {
+ ext4_msg(sb, KERN_ERR,
+ "unsupported inode size: %d",
+ sbi->s_inode_size);
+ ext4_msg(sb, KERN_ERR, "blocksize: %d", blocksize);
+ return -EINVAL;
+ }
+ /*
+ * i_atime_extra is the last extra field available for
+ * [acm]times in struct ext4_inode. Checking for that
+ * field should suffice to ensure we have extra space
+ * for all three.
+ */
+ if (sbi->s_inode_size >= offsetof(struct ext4_inode, i_atime_extra) +
+ sizeof(((struct ext4_inode *)0)->i_atime_extra)) {
+ sb->s_time_gran = 1;
+ sb->s_time_max = EXT4_EXTRA_TIMESTAMP_MAX;
+ } else {
+ sb->s_time_gran = NSEC_PER_SEC;
+ sb->s_time_max = EXT4_NON_EXTRA_TIMESTAMP_MAX;
+ }
+ sb->s_time_min = EXT4_TIMESTAMP_MIN;
+ }
+
+ if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE) {
+ sbi->s_want_extra_isize = sizeof(struct ext4_inode) -
+ EXT4_GOOD_OLD_INODE_SIZE;
+ if (ext4_has_feature_extra_isize(sb)) {
+ unsigned v, max = (sbi->s_inode_size -
+ EXT4_GOOD_OLD_INODE_SIZE);
+
+ v = le16_to_cpu(es->s_want_extra_isize);
+ if (v > max) {
+ ext4_msg(sb, KERN_ERR,
+ "bad s_want_extra_isize: %d", v);
+ return -EINVAL;
+ }
+ if (sbi->s_want_extra_isize < v)
+ sbi->s_want_extra_isize = v;
+
+ v = le16_to_cpu(es->s_min_extra_isize);
+ if (v > max) {
+ ext4_msg(sb, KERN_ERR,
+ "bad s_min_extra_isize: %d", v);
+ return -EINVAL;
+ }
+ if (sbi->s_want_extra_isize < v)
+ sbi->s_want_extra_isize = v;
+ }
+ }
+
+ return 0;
+}
+
static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb)
{
struct buffer_head *bh, **group_desc;
@@ -4590,68 +4663,8 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb)
if (blocksize == PAGE_SIZE)
set_opt(sb, DIOREAD_NOLOCK);
- if (le32_to_cpu(es->s_rev_level) == EXT4_GOOD_OLD_REV) {
- sbi->s_inode_size = EXT4_GOOD_OLD_INODE_SIZE;
- sbi->s_first_ino = EXT4_GOOD_OLD_FIRST_INO;
- } else {
- sbi->s_inode_size = le16_to_cpu(es->s_inode_size);
- sbi->s_first_ino = le32_to_cpu(es->s_first_ino);
- if (sbi->s_first_ino < EXT4_GOOD_OLD_FIRST_INO) {
- ext4_msg(sb, KERN_ERR, "invalid first ino: %u",
- sbi->s_first_ino);
- goto failed_mount;
- }
- if ((sbi->s_inode_size < EXT4_GOOD_OLD_INODE_SIZE) ||
- (!is_power_of_2(sbi->s_inode_size)) ||
- (sbi->s_inode_size > blocksize)) {
- ext4_msg(sb, KERN_ERR,
- "unsupported inode size: %d",
- sbi->s_inode_size);
- ext4_msg(sb, KERN_ERR, "blocksize: %d", blocksize);
- goto failed_mount;
- }
- /*
- * i_atime_extra is the last extra field available for
- * [acm]times in struct ext4_inode. Checking for that
- * field should suffice to ensure we have extra space
- * for all three.
- */
- if (sbi->s_inode_size >= offsetof(struct ext4_inode, i_atime_extra) +
- sizeof(((struct ext4_inode *)0)->i_atime_extra)) {
- sb->s_time_gran = 1;
- sb->s_time_max = EXT4_EXTRA_TIMESTAMP_MAX;
- } else {
- sb->s_time_gran = NSEC_PER_SEC;
- sb->s_time_max = EXT4_NON_EXTRA_TIMESTAMP_MAX;
- }
- sb->s_time_min = EXT4_TIMESTAMP_MIN;
- }
- if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE) {
- sbi->s_want_extra_isize = sizeof(struct ext4_inode) -
- EXT4_GOOD_OLD_INODE_SIZE;
- if (ext4_has_feature_extra_isize(sb)) {
- unsigned v, max = (sbi->s_inode_size -
- EXT4_GOOD_OLD_INODE_SIZE);
-
- v = le16_to_cpu(es->s_want_extra_isize);
- if (v > max) {
- ext4_msg(sb, KERN_ERR,
- "bad s_want_extra_isize: %d", v);
- goto failed_mount;
- }
- if (sbi->s_want_extra_isize < v)
- sbi->s_want_extra_isize = v;
-
- v = le16_to_cpu(es->s_min_extra_isize);
- if (v > max) {
- ext4_msg(sb, KERN_ERR,
- "bad s_min_extra_isize: %d", v);
- goto failed_mount;
- }
- if (sbi->s_want_extra_isize < v)
- sbi->s_want_extra_isize = v;
- }
- }
+ if (ext4_inode_info_init(sb, es, blocksize))
+ goto failed_mount;
err = parse_apply_sb_mount_options(sb, ctx);
if (err < 0)
--
2.31.1
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