diff options
author | Eric Biggers <ebiggers@google.com> | 2022-12-17 08:02:12 +0300 |
---|---|---|
committer | Theodore Ts'o <tytso@mit.edu> | 2023-02-09 18:43:23 +0300 |
commit | 11768cfd98136dd8399480c60b7a5d3d3c7b109b (patch) | |
tree | f2225c062607b43ce3f08d699b66590db2533fb0 /fs/ext4/fast_commit.c | |
parent | 3478c83cf26bbffd026ae6a56bcb1fe544f0834e (diff) | |
download | linux-11768cfd98136dd8399480c60b7a5d3d3c7b109b.tar.xz |
ext4: use ext4_fc_tl_mem in fast-commit replay path
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: dcc5827484d6 ("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>
Diffstat (limited to 'fs/ext4/fast_commit.c')
-rw-r--r-- | fs/ext4/fast_commit.c | 44 |
1 files changed, 26 insertions, 18 deletions
diff --git a/fs/ext4/fast_commit.c b/fs/ext4/fast_commit.c index 4594b62f147b..b06de728b3b6 100644 --- a/fs/ext4/fast_commit.c +++ b/fs/ext4/fast_commit.c @@ -1332,8 +1332,14 @@ 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; @@ -1345,16 +1351,18 @@ 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; @@ -1451,8 +1459,8 @@ 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; @@ -1506,8 +1514,8 @@ 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; @@ -1609,8 +1617,8 @@ 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; @@ -1708,7 +1716,7 @@ 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; @@ -1828,8 +1836,8 @@ 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; @@ -2025,7 +2033,7 @@ 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; @@ -2144,7 +2152,7 @@ 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; |