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ext4: use ext4_fc_tl_mem in fast-commit replay path 

[ Upstream commit 11768cfd98 ]

To avoid 'sparse' warnings about missing endianness conversions, don't
store native endianness values into struct ext4_fc_tl.  Instead, use a
separate struct type, ext4_fc_tl_mem.

Fixes: dcc5827484 ("ext4: factor out ext4_fc_get_tl()")
Cc: Ye Bin <yebin10@huawei.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20221217050212.150665-1-ebiggers@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Eric Biggers 2022-12-16 21:02:12 -08:00 committed by Greg Kroah-Hartman
parent aa4d726af7
commit 98db4a0322
1 changed files with 26 additions and 18 deletions
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44
fs/ext4/fast_commit.c
View File

@ -1282,8 +1282,14 @@ struct dentry_info_args {
char *dname;
};
/* Same as struct ext4_fc_tl, but uses native endianness fields */
struct ext4_fc_tl_mem {
u16 fc_tag;
u16 fc_len;
};
static inline void tl_to_darg(struct dentry_info_args *darg,
struct ext4_fc_tl *tl, u8 *val)
struct ext4_fc_tl_mem *tl, u8 *val)
{
struct ext4_fc_dentry_info fcd;
@ -1295,16 +1301,18 @@ static inline void tl_to_darg(struct dentry_info_args *darg,
darg->dname_len = tl->fc_len - sizeof(struct ext4_fc_dentry_info);
}
static inline void ext4_fc_get_tl(struct ext4_fc_tl *tl, u8 *val)
static inline void ext4_fc_get_tl(struct ext4_fc_tl_mem *tl, u8 *val)
{
memcpy(tl, val, EXT4_FC_TAG_BASE_LEN);
tl->fc_len = le16_to_cpu(tl->fc_len);
tl->fc_tag = le16_to_cpu(tl->fc_tag);
struct ext4_fc_tl tl_disk;
memcpy(&tl_disk, val, EXT4_FC_TAG_BASE_LEN);
tl->fc_len = le16_to_cpu(tl_disk.fc_len);
tl->fc_tag = le16_to_cpu(tl_disk.fc_tag);
}
/* Unlink replay function */
static int ext4_fc_replay_unlink(struct super_block *sb, struct ext4_fc_tl *tl,
u8 *val)
static int ext4_fc_replay_unlink(struct super_block *sb,
struct ext4_fc_tl_mem *tl, u8 *val)
{
struct inode *inode, *old_parent;
struct qstr entry;
@ -1401,8 +1409,8 @@ out:
}
/* Link replay function */
static int ext4_fc_replay_link(struct super_block *sb, struct ext4_fc_tl *tl,
u8 *val)
static int ext4_fc_replay_link(struct super_block *sb,
struct ext4_fc_tl_mem *tl, u8 *val)
{
struct inode *inode;
struct dentry_info_args darg;
@ -1456,8 +1464,8 @@ static int ext4_fc_record_modified_inode(struct super_block *sb, int ino)
/*
* Inode replay function
*/
static int ext4_fc_replay_inode(struct super_block *sb, struct ext4_fc_tl *tl,
u8 *val)
static int ext4_fc_replay_inode(struct super_block *sb,
struct ext4_fc_tl_mem *tl, u8 *val)
{
struct ext4_fc_inode fc_inode;
struct ext4_inode *raw_inode;
@ -1557,8 +1565,8 @@ out:
* inode for which we are trying to create a dentry here, should already have
* been replayed before we start here.
*/
static int ext4_fc_replay_create(struct super_block *sb, struct ext4_fc_tl *tl,
u8 *val)
static int ext4_fc_replay_create(struct super_block *sb,
struct ext4_fc_tl_mem *tl, u8 *val)
{
int ret = 0;
struct inode *inode = NULL;
@ -1657,7 +1665,7 @@ int ext4_fc_record_regions(struct super_block *sb, int ino,
/* Replay add range tag */
static int ext4_fc_replay_add_range(struct super_block *sb,
struct ext4_fc_tl *tl, u8 *val)
struct ext4_fc_tl_mem *tl, u8 *val)
{
struct ext4_fc_add_range fc_add_ex;
struct ext4_extent newex, *ex;
@ -1778,8 +1786,8 @@ out:
/* Replay DEL_RANGE tag */
static int
ext4_fc_replay_del_range(struct super_block *sb, struct ext4_fc_tl *tl,
u8 *val)
ext4_fc_replay_del_range(struct super_block *sb,
struct ext4_fc_tl_mem *tl, u8 *val)
{
struct inode *inode;
struct ext4_fc_del_range lrange;
@ -1972,7 +1980,7 @@ static int ext4_fc_replay_scan(journal_t *journal,
struct ext4_fc_replay_state *state;
int ret = JBD2_FC_REPLAY_CONTINUE;
struct ext4_fc_add_range ext;
struct ext4_fc_tl tl;
struct ext4_fc_tl_mem tl;
struct ext4_fc_tail tail;
__u8 *start, *end, *cur, *val;
struct ext4_fc_head head;
@ -2091,7 +2099,7 @@ static int ext4_fc_replay(journal_t *journal, struct buffer_head *bh,
{
struct super_block *sb = journal->j_private;
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_fc_tl tl;
struct ext4_fc_tl_mem tl;
__u8 *start, *end, *cur, *val;
int ret = JBD2_FC_REPLAY_CONTINUE;
struct ext4_fc_replay_state *state = &sbi->s_fc_replay_state;