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Date: Wed, 4 Jan 2023 23:13:53 -0800
From: Eric Biggers <ebiggers@...nel.org>
To: stable@...r.kernel.org
Cc: linux-ext4@...r.kernel.org, Ye Bin <yebin10@...wei.com>,
Theodore Ts'o <tytso@....edu>
Subject: [PATCH 5.15 04/10] ext4: factor out ext4_fc_get_tl()
From: Ye Bin <yebin10@...wei.com>
commit dcc5827484d6e53ccda12334f8bbfafcc593ceda upstream.
Factor out ext4_fc_get_tl() to fill 'tl' with host byte order.
Signed-off-by: Ye Bin <yebin10@...wei.com>
Link: https://lore.kernel.org/r/20220924075233.2315259-3-yebin10@huawei.com
Signed-off-by: Theodore Ts'o <tytso@....edu>
Signed-off-by: Eric Biggers <ebiggers@...gle.com>
---
fs/ext4/fast_commit.c | 46 +++++++++++++++++++++++--------------------
1 file changed, 25 insertions(+), 21 deletions(-)
diff --git a/fs/ext4/fast_commit.c b/fs/ext4/fast_commit.c
index 9b1dedd03be0a..fdce08c68cd43 100644
--- a/fs/ext4/fast_commit.c
+++ b/fs/ext4/fast_commit.c
@@ -1271,7 +1271,7 @@ struct dentry_info_args {
};
static inline void tl_to_darg(struct dentry_info_args *darg,
- struct ext4_fc_tl *tl, u8 *val)
+ struct ext4_fc_tl *tl, u8 *val)
{
struct ext4_fc_dentry_info fcd;
@@ -1280,8 +1280,14 @@ static inline void tl_to_darg(struct dentry_info_args *darg,
darg->parent_ino = le32_to_cpu(fcd.fc_parent_ino);
darg->ino = le32_to_cpu(fcd.fc_ino);
darg->dname = val + offsetof(struct ext4_fc_dentry_info, fc_dname);
- darg->dname_len = le16_to_cpu(tl->fc_len) -
- sizeof(struct ext4_fc_dentry_info);
+ 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)
+{
+ 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);
}
/* Unlink replay function */
@@ -1446,7 +1452,7 @@ static int ext4_fc_replay_inode(struct super_block *sb, struct ext4_fc_tl *tl,
struct ext4_inode *raw_fc_inode;
struct inode *inode = NULL;
struct ext4_iloc iloc;
- int inode_len, ino, ret, tag = le16_to_cpu(tl->fc_tag);
+ int inode_len, ino, ret, tag = tl->fc_tag;
struct ext4_extent_header *eh;
memcpy(&fc_inode, val, sizeof(fc_inode));
@@ -1471,7 +1477,7 @@ static int ext4_fc_replay_inode(struct super_block *sb, struct ext4_fc_tl *tl,
if (ret)
goto out;
- inode_len = le16_to_cpu(tl->fc_len) - sizeof(struct ext4_fc_inode);
+ inode_len = tl->fc_len - sizeof(struct ext4_fc_inode);
raw_inode = ext4_raw_inode(&iloc);
memcpy(raw_inode, raw_fc_inode, offsetof(struct ext4_inode, i_block));
@@ -1958,12 +1964,12 @@ static int ext4_fc_replay_scan(journal_t *journal,
state->fc_replay_expected_off++;
for (cur = start; cur < end;
- cur = cur + EXT4_FC_TAG_BASE_LEN + le16_to_cpu(tl.fc_len)) {
- memcpy(&tl, cur, EXT4_FC_TAG_BASE_LEN);
+ cur = cur + EXT4_FC_TAG_BASE_LEN + tl.fc_len) {
+ ext4_fc_get_tl(&tl, cur);
val = cur + EXT4_FC_TAG_BASE_LEN;
ext4_debug("Scan phase, tag:%s, blk %lld\n",
- tag2str(le16_to_cpu(tl.fc_tag)), bh->b_blocknr);
- switch (le16_to_cpu(tl.fc_tag)) {
+ tag2str(tl.fc_tag), bh->b_blocknr);
+ switch (tl.fc_tag) {
case EXT4_FC_TAG_ADD_RANGE:
memcpy(&ext, val, sizeof(ext));
ex = (struct ext4_extent *)&ext.fc_ex;
@@ -1983,7 +1989,7 @@ static int ext4_fc_replay_scan(journal_t *journal,
case EXT4_FC_TAG_PAD:
state->fc_cur_tag++;
state->fc_crc = ext4_chksum(sbi, state->fc_crc, cur,
- EXT4_FC_TAG_BASE_LEN + le16_to_cpu(tl.fc_len));
+ EXT4_FC_TAG_BASE_LEN + tl.fc_len);
break;
case EXT4_FC_TAG_TAIL:
state->fc_cur_tag++;
@@ -2016,7 +2022,7 @@ static int ext4_fc_replay_scan(journal_t *journal,
}
state->fc_cur_tag++;
state->fc_crc = ext4_chksum(sbi, state->fc_crc, cur,
- EXT4_FC_TAG_BASE_LEN + le16_to_cpu(tl.fc_len));
+ EXT4_FC_TAG_BASE_LEN + tl.fc_len);
break;
default:
ret = state->fc_replay_num_tags ?
@@ -2072,8 +2078,8 @@ static int ext4_fc_replay(journal_t *journal, struct buffer_head *bh,
end = (__u8 *)bh->b_data + journal->j_blocksize - 1;
for (cur = start; cur < end;
- cur = cur + EXT4_FC_TAG_BASE_LEN + le16_to_cpu(tl.fc_len)) {
- memcpy(&tl, cur, EXT4_FC_TAG_BASE_LEN);
+ cur = cur + EXT4_FC_TAG_BASE_LEN + tl.fc_len) {
+ ext4_fc_get_tl(&tl, cur);
val = cur + EXT4_FC_TAG_BASE_LEN;
if (state->fc_replay_num_tags == 0) {
@@ -2081,10 +2087,9 @@ static int ext4_fc_replay(journal_t *journal, struct buffer_head *bh,
ext4_fc_set_bitmaps_and_counters(sb);
break;
}
- ext4_debug("Replay phase, tag:%s\n",
- tag2str(le16_to_cpu(tl.fc_tag)));
+ ext4_debug("Replay phase, tag:%s\n", tag2str(tl.fc_tag));
state->fc_replay_num_tags--;
- switch (le16_to_cpu(tl.fc_tag)) {
+ switch (tl.fc_tag) {
case EXT4_FC_TAG_LINK:
ret = ext4_fc_replay_link(sb, &tl, val);
break;
@@ -2105,19 +2110,18 @@ static int ext4_fc_replay(journal_t *journal, struct buffer_head *bh,
break;
case EXT4_FC_TAG_PAD:
trace_ext4_fc_replay(sb, EXT4_FC_TAG_PAD, 0,
- le16_to_cpu(tl.fc_len), 0);
+ tl.fc_len, 0);
break;
case EXT4_FC_TAG_TAIL:
- trace_ext4_fc_replay(sb, EXT4_FC_TAG_TAIL, 0,
- le16_to_cpu(tl.fc_len), 0);
+ trace_ext4_fc_replay(sb, EXT4_FC_TAG_TAIL,
+ 0, tl.fc_len, 0);
memcpy(&tail, val, sizeof(tail));
WARN_ON(le32_to_cpu(tail.fc_tid) != expected_tid);
break;
case EXT4_FC_TAG_HEAD:
break;
default:
- trace_ext4_fc_replay(sb, le16_to_cpu(tl.fc_tag), 0,
- le16_to_cpu(tl.fc_len), 0);
+ trace_ext4_fc_replay(sb, tl.fc_tag, 0, tl.fc_len, 0);
ret = -ECANCELED;
break;
}
--
2.39.0
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