[PATCH RFC 13/13] ext4: simplify the printing with '%pD' specifier

From: Jia He
Date: Wed Jul 14 2021 - 23:16:47 EST


After the behavior of '%pD' is changed to print the full path of file,
the log printing can be simplified.

The error case is well handled in d_path_unsafe(), the error string
would be copied in '%pD' buffer, no need to additionally handle IS_ERR().

Cc: "Theodore Ts'o" <tytso@xxxxxxx>
Cc: Andreas Dilger <adilger.kernel@xxxxxxxxx>
Cc: linux-ext4@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Jia He <justin.he@xxxxxxx>
---
fs/ext4/super.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index dfa09a277b56..89ad5a334b80 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -803,31 +803,27 @@ void __ext4_error_file(struct file *file, const char *function,
va_list args;
struct va_format vaf;
struct inode *inode = file_inode(file);
- char pathname[80], *path;

if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb))))
return;

trace_ext4_error(inode->i_sb, function, line);
if (ext4_error_ratelimit(inode->i_sb)) {
- path = file_path(file, pathname, sizeof(pathname));
- if (IS_ERR(path))
- path = "(unknown)";
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
if (block)
printk(KERN_CRIT
"EXT4-fs error (device %s): %s:%d: inode #%lu: "
- "block %llu: comm %s: path %s: %pV\n",
+ "block %llu: comm %s: path %pD: %pV\n",
inode->i_sb->s_id, function, line, inode->i_ino,
- block, current->comm, path, &vaf);
+ block, current->comm, file, &vaf);
else
printk(KERN_CRIT
"EXT4-fs error (device %s): %s:%d: inode #%lu: "
- "comm %s: path %s: %pV\n",
+ "comm %s: path %pD: %pV\n",
inode->i_sb->s_id, function, line, inode->i_ino,
- current->comm, path, &vaf);
+ current->comm, file, &vaf);
va_end(args);
}
ext4_handle_error(inode->i_sb, false, EFSCORRUPTED, inode->i_ino, block,
--
2.17.1