As Al said, "the only use of sbi->dev_name is debugging
printks and all of those have sb->s_id available, with
device name stored in there. Which makes the whole
thing bloody weird".
sbi->dev_name was used for our debugging use and it's
better to just use s_id in community and delete
the whole erofs_mount_private stuff.
Suggested-by: Al Viro <v...@zeniv.linux.org.uk>
Signed-off-by: Gao Xiang <gaoxian...@huawei.com>
---
drivers/staging/erofs/internal.h | 2 --
drivers/staging/erofs/super.c | 54 +++++---------------------------
2 files changed, 7 insertions(+), 49 deletions(-)
diff --git a/drivers/staging/erofs/internal.h b/drivers/staging/erofs/internal.h
index c082a462baf6..b206a85776b4 100644
--- a/drivers/staging/erofs/internal.h
+++ b/drivers/staging/erofs/internal.h
@@ -113,8 +113,6 @@ struct erofs_sb_info {
u8 volume_name[16]; /* volume name */
u32 requirements;
- char *dev_name;
-
unsigned int mount_opt;
#ifdef CONFIG_EROFS_FAULT_INJECTION
diff --git a/drivers/staging/erofs/super.c b/drivers/staging/erofs/super.c
index 7e6fe9cd45e7..bfb6e1e09781 100644
--- a/drivers/staging/erofs/super.c
+++ b/drivers/staging/erofs/super.c
@@ -362,15 +362,13 @@ static struct inode *erofs_init_managed_cache(struct
super_block *sb)
#endif
-static int erofs_read_super(struct super_block *sb,
- const char *dev_name,
- void *data, int silent)
+static int erofs_fill_super(struct super_block *sb, void *data, int silent)
{
struct inode *inode;
struct erofs_sb_info *sbi;
int err = -EINVAL;
- infoln("read_super, device -> %s", dev_name);
+ infoln("fill_super, device -> %s", sb->s_id);
infoln("options -> %s", (char *)data);
if (unlikely(!sb_set_blocksize(sb, EROFS_BLKSIZ))) {
@@ -448,30 +446,16 @@ static int erofs_read_super(struct super_block *sb,
goto err_iget;
}
- /* save the device name to sbi */
- sbi->dev_name = __getname();
- if (!sbi->dev_name) {
- err = -ENOMEM;
- goto err_devname;
- }
-
- snprintf(sbi->dev_name, PATH_MAX, "%s", dev_name);
- sbi->dev_name[PATH_MAX - 1] = '\0';
-
erofs_shrinker_register(sb);
if (!silent)
- infoln("mounted on %s with opts: %s.", dev_name,
- (char *)data);
+ infoln("mounted on %s with opts: %s.", sb->s_id, (char *)data);
return 0;
/*
* please add a label for each exit point and use
* the following name convention, thus new features
* can be integrated easily without renaming labels.
*/
-err_devname:
- dput(sb->s_root);
- sb->s_root = NULL;
err_iget:
#ifdef EROFS_FS_HAS_MANAGED_CACHE
iput(sbi->managed_cache);
@@ -499,8 +483,7 @@ static void erofs_put_super(struct super_block *sb)
WARN_ON(sb->s_magic != EROFS_SUPER_MAGIC);
- infoln("unmounted for %s", sbi->dev_name);
- __putname(sbi->dev_name);
+ infoln("unmounted for %s", sb->s_id);
erofs_shrinker_unregister(sb);
#ifdef EROFS_FS_HAS_MANAGED_CACHE
@@ -510,33 +493,10 @@ static void erofs_put_super(struct super_block *sb)
sb->s_fs_info = NULL;
}
-
-struct erofs_mount_private {
- const char *dev_name;
- char *options;
-};
-
-/* support mount_bdev() with options */
-static int erofs_fill_super(struct super_block *sb,
- void *_priv, int silent)
-{
- struct erofs_mount_private *priv = _priv;
-
- return erofs_read_super(sb, priv->dev_name,
- priv->options, silent);
-}
-
-static struct dentry *erofs_mount(
- struct file_system_type *fs_type, int flags,
- const char *dev_name, void *data)
+static struct dentry *erofs_mount(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *data)
{
- struct erofs_mount_private priv = {
- .dev_name = dev_name,
- .options = data
- };
-
- return mount_bdev(fs_type, flags, dev_name,
- &priv, erofs_fill_super);
+ return mount_bdev(fs_type, flags, dev_name, data, erofs_fill_super);
}
static struct file_system_type erofs_fs_type = {
--
2.17.1
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