ext4: save all error info in save_error_info() and drop ext4_set_errno()
Using a separate function, ext4_set_errno() to set the errno is
problematic because it doesn't do the right thing once
s_last_error_errorcode is non-zero. It's also less racy to set all of
the error information all at once. (Also, as a bonus, it shrinks code
size slightly.)
Link: https://lore.kernel.org/r/20200329020404.686965-1-tytso@mit.edu
Fixes: 878520ac45f9 ("ext4: save the error code which triggered...")
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 5f0a7589..a8aca47 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -160,9 +160,9 @@ static struct buffer_head *__ext4_read_dirblock(struct inode *inode,
!ext4_simulate_fail(inode->i_sb, EXT4_SIM_DIRBLOCK_CRC))
set_buffer_verified(bh);
else {
- ext4_set_errno(inode->i_sb, EFSBADCRC);
- ext4_error_inode(inode, func, line, block,
- "Directory index failed checksum");
+ ext4_error_inode_err(inode, func, line, block,
+ EFSBADCRC,
+ "Directory index failed checksum");
brelse(bh);
return ERR_PTR(-EFSBADCRC);
}
@@ -172,9 +172,9 @@ static struct buffer_head *__ext4_read_dirblock(struct inode *inode,
!ext4_simulate_fail(inode->i_sb, EXT4_SIM_DIRBLOCK_CRC))
set_buffer_verified(bh);
else {
- ext4_set_errno(inode->i_sb, EFSBADCRC);
- ext4_error_inode(inode, func, line, block,
- "Directory block failed checksum");
+ ext4_error_inode_err(inode, func, line, block,
+ EFSBADCRC,
+ "Directory block failed checksum");
brelse(bh);
return ERR_PTR(-EFSBADCRC);
}
@@ -1532,9 +1532,9 @@ static struct buffer_head *__ext4_find_entry(struct inode *dir,
goto next;
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
- ext4_set_errno(sb, EIO);
- EXT4_ERROR_INODE(dir, "reading directory lblock %lu",
- (unsigned long) block);
+ EXT4_ERROR_INODE_ERR(dir, EIO,
+ "reading directory lblock %lu",
+ (unsigned long) block);
brelse(bh);
ret = ERR_PTR(-EIO);
goto cleanup_and_exit;
@@ -1543,9 +1543,9 @@ static struct buffer_head *__ext4_find_entry(struct inode *dir,
!is_dx_internal_node(dir, block,
(struct ext4_dir_entry *)bh->b_data) &&
!ext4_dirblock_csum_verify(dir, bh)) {
- ext4_set_errno(sb, EFSBADCRC);
- EXT4_ERROR_INODE(dir, "checksumming directory "
- "block %lu", (unsigned long)block);
+ EXT4_ERROR_INODE_ERR(dir, EFSBADCRC,
+ "checksumming directory "
+ "block %lu", (unsigned long)block);
brelse(bh);
ret = ERR_PTR(-EFSBADCRC);
goto cleanup_and_exit;