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UBIFS: re-arrange debugging code a bit 

Move 'dbg_debugfs_init()' and 'dbg_debugfs_exit()' functions which initialize
debugfs for whole UBIFS subsystem below the code which initializes debugfs for
a particular UBIFS instance. And do the same for 'ubifs_debugging_init()' and
'ubifs_debugging_exit()' functions. This layout is a bit better for the next
patches, so this is just a preparation.

Also, rename 'open_debugfs_file()' into 'dfs_file_open()' for consistency.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Artem Bityutskiy 2011-06-01 15:44:14 +03:00 committed by Artem Bityutskiy
parent 24a4f8009e
commit 7dae997de6
1 changed files with 59 additions and 59 deletions
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118
fs/ubifs/debug.c
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@ -2808,70 +2808,13 @@ int dbg_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype)
return 0;
}
/**
* ubifs_debugging_init - initialize UBIFS debugging.
* @c: UBIFS file-system description object
*
* This function initializes debugging-related data for the file system.
* Returns zero in case of success and a negative error code in case of
* failure.
*/
int ubifs_debugging_init(struct ubifs_info *c)
{
c->dbg = kzalloc(sizeof(struct ubifs_debug_info), GFP_KERNEL);
if (!c->dbg)
return -ENOMEM;
failure_mode_init(c);
return 0;
}
/**
* ubifs_debugging_exit - free debugging data.
* @c: UBIFS file-system description object
*/
void ubifs_debugging_exit(struct ubifs_info *c)
{
failure_mode_exit(c);
kfree(c->dbg);
}
/*
* Root directory for UBIFS stuff in debugfs. Contains sub-directories which
* contain the stuff specific to particular file-system mounts.
*/
static struct dentry *dfs_rootdir;
/**
* dbg_debugfs_init - initialize debugfs file-system.
*
* UBIFS uses debugfs file-system to expose various debugging knobs to
* user-space. This function creates "ubifs" directory in the debugfs
* file-system. Returns zero in case of success and a negative error code in
* case of failure.
*/
int dbg_debugfs_init(void)
{
dfs_rootdir = debugfs_create_dir("ubifs", NULL);
if (IS_ERR_OR_NULL(dfs_rootdir)) {
int err = dfs_rootdir ? PTR_ERR(dfs_rootdir) : -ENODEV;
ubifs_err("cannot create \"ubifs\" debugfs directory, "
"error %d\n", err);
return err;
}
return 0;
}
/**
* dbg_debugfs_exit - remove the "ubifs" directory from debugfs file-system.
*/
void dbg_debugfs_exit(void)
{
debugfs_remove(dfs_rootdir);
}
static int open_debugfs_file(struct inode *inode, struct file *file)
static int dfs_file_open(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
return nonseekable_open(inode, file);
@ -2978,7 +2921,7 @@ static ssize_t dfs_file_write(struct file *file, const char __user *u,
}
static const struct file_operations dfs_fops = {
.open = open_debugfs_file,
.open = dfs_file_open,
.read = dfs_file_read,
.write = dfs_file_write,
.owner = THIS_MODULE,
@ -3099,4 +3042,61 @@ void dbg_debugfs_exit_fs(struct ubifs_info *c)
debugfs_remove_recursive(c->dbg->dfs_dir);
}
/**
* dbg_debugfs_init - initialize debugfs file-system.
*
* UBIFS uses debugfs file-system to expose various debugging knobs to
* user-space. This function creates "ubifs" directory in the debugfs
* file-system. Returns zero in case of success and a negative error code in
* case of failure.
*/
int dbg_debugfs_init(void)
{
dfs_rootdir = debugfs_create_dir("ubifs", NULL);
if (IS_ERR_OR_NULL(dfs_rootdir)) {
int err = dfs_rootdir ? PTR_ERR(dfs_rootdir) : -ENODEV;
ubifs_err("cannot create \"ubifs\" debugfs directory, "
"error %d\n", err);
return err;
}
return 0;
}
/**
* dbg_debugfs_exit - remove the "ubifs" directory from debugfs file-system.
*/
void dbg_debugfs_exit(void)
{
debugfs_remove(dfs_rootdir);
}
/**
* ubifs_debugging_init - initialize UBIFS debugging.
* @c: UBIFS file-system description object
*
* This function initializes debugging-related data for the file system.
* Returns zero in case of success and a negative error code in case of
* failure.
*/
int ubifs_debugging_init(struct ubifs_info *c)
{
c->dbg = kzalloc(sizeof(struct ubifs_debug_info), GFP_KERNEL);
if (!c->dbg)
return -ENOMEM;
failure_mode_init(c);
return 0;
}
/**
* ubifs_debugging_exit - free debugging data.
* @c: UBIFS file-system description object
*/
void ubifs_debugging_exit(struct ubifs_info *c)
{
failure_mode_exit(c);
kfree(c->dbg);
}
#endif /* CONFIG_UBIFS_FS_DEBUG */