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ext4: factor out is_special_ino()

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Factor out the helper is_special_ino() to facilitate the checking of
special inodes in the subsequent patches.

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20250423085257.122685-7-yi.zhang@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Zhang Yi 2025-04-23 16:52:54 +08:00 committed by Theodore Ts'o
parent f22a0ef223
commit 0b8e0bd450
2 changed files with 12 additions and 6 deletions
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11
fs/ext4/ext4.h
View File

@ -3055,6 +3055,17 @@ extern void ext4_da_update_reserve_space(struct inode *inode,
extern int ext4_issue_zeroout(struct inode *inode, ext4_lblk_t lblk,
ext4_fsblk_t pblk, ext4_lblk_t len);
static inline bool is_special_ino(struct super_block *sb, unsigned long ino)
{
struct ext4_super_block *es = EXT4_SB(sb)->s_es;
return (ino < EXT4_FIRST_INO(sb) && ino != EXT4_ROOT_INO) ||
ino == le32_to_cpu(es->s_usr_quota_inum) ||
ino == le32_to_cpu(es->s_grp_quota_inum) ||
ino == le32_to_cpu(es->s_prj_quota_inum) ||
ino == le32_to_cpu(es->s_orphan_file_inum);
}
/* indirect.c */
extern int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
struct ext4_map_blocks *map, int flags);

7
fs/ext4/inode.c
View File

@ -4797,12 +4797,7 @@ struct inode *__ext4_iget(struct super_block *sb, unsigned long ino,
gid_t i_gid;
projid_t i_projid;
if ((!(flags & EXT4_IGET_SPECIAL) &&
((ino < EXT4_FIRST_INO(sb) && ino != EXT4_ROOT_INO) ||
ino == le32_to_cpu(es->s_usr_quota_inum) ||
ino == le32_to_cpu(es->s_grp_quota_inum) ||
ino == le32_to_cpu(es->s_prj_quota_inum) ||
ino == le32_to_cpu(es->s_orphan_file_inum))) ||
if ((!(flags & EXT4_IGET_SPECIAL) && is_special_ino(sb, ino)) ||
(ino < EXT4_ROOT_INO) ||
(ino > le32_to_cpu(es->s_inodes_count))) {
if (flags & EXT4_IGET_HANDLE)