Commit cc3c0b53 authored by Al Viro's avatar Al Viro
Browse files

add prefix to fs_context->log 



... turning it into struct p_log embedded into fs_context.  Initialize
the prefix with fs_type->name, turning fs_parse() into a trivial
inline wrapper for __fs_parse().

This makes fs_parameter_description->name completely unused.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent c80c98f0

fs/ceph/super.c

+2 −2
Original line number Diff line number Diff line
@@ -250,7 +250,7 @@ static int ceph_parse_source(struct fs_parameter *param, struct fs_context *fc) 
		dout("server path '%s'\n", fsopt->server_path);



	ret = ceph_parse_mon_ips(param->string, dev_name_end - dev_name,

				 pctx->copts, fc->log);

				 pctx->copts, fc->log.log);

	if (ret)

		return ret;
@@ -268,7 +268,7 @@ static int ceph_parse_mount_param(struct fs_context *fc, 
	unsigned int mode;

	int token, ret;



	ret = ceph_parse_param(param, pctx->copts, fc->log);

	ret = ceph_parse_param(param, pctx->copts, fc->log.log);

	if (ret != -ENOPARAM)

		return ret;

fs/fs_context.c

+5 −4
Original line number Diff line number Diff line
@@ -271,6 +271,7 @@ static struct fs_context *alloc_fs_context(struct file_system_type *fs_type, 
	fc->fs_type	= get_filesystem(fs_type);

	fc->cred	= get_current_cred();

	fc->net_ns	= get_net(current->nsproxy->net_ns);

	fc->log.prefix	= fs_type->name;



	mutex_init(&fc->uapi_mutex);
@@ -364,8 +365,8 @@ struct fs_context *vfs_dup_fs_context(struct fs_context *src_fc) 
	get_net(fc->net_ns);

	get_user_ns(fc->user_ns);

	get_cred(fc->cred);

	if (fc->log)

		refcount_inc(&fc->log->usage);

	if (fc->log.log)

		refcount_inc(&fc->log.log->usage);



	/* Can't call put until we've called ->dup */

	ret = fc->ops->dup(fc, src_fc);
@@ -442,12 +443,12 @@ EXPORT_SYMBOL(logfc); 
 */

static void put_fc_log(struct fs_context *fc)

{

	struct fc_log *log = fc->log;

	struct fc_log *log = fc->log.log;

	int i;



	if (log) {

		if (refcount_dec_and_test(&log->usage)) {

			fc->log = NULL;

			fc->log.log = NULL;

			for (i = 0; i <= 7; i++)

				if (log->need_free & (1 << i))

					kfree(log->buffer[i]);

fs/fs_parser.c

+0 −10
Original line number Diff line number Diff line
@@ -243,16 +243,6 @@ unknown_parameter: 
}

EXPORT_SYMBOL(__fs_parse);



int fs_parse(struct fs_context *fc,

	     const struct fs_parameter_description *desc,

	     struct fs_parameter *param,

	     struct fs_parse_result *result)

{

	struct p_log log = {.prefix = desc->name, .log = fc->log};

	return __fs_parse(&log, desc, param, result);

}

EXPORT_SYMBOL(fs_parse);



/**

 * fs_lookup_param - Look up a path referred to by a parameter

 * @fc: The filesystem context to log errors through.

fs/fsopen.c

+5 −5
Original line number Diff line number Diff line
@@ -25,7 +25,7 @@ static ssize_t fscontext_read(struct file *file, 
			      char __user *_buf, size_t len, loff_t *pos)

{

	struct fs_context *fc = file->private_data;

	struct fc_log *log = fc->log;

	struct fc_log *log = fc->log.log;

	unsigned int logsize = ARRAY_SIZE(log->buffer);

	ssize_t ret;

	char *p;
@@ -97,11 +97,11 @@ static int fscontext_create_fd(struct fs_context *fc, unsigned int o_flags) 


static int fscontext_alloc_log(struct fs_context *fc)

{

	fc->log = kzalloc(sizeof(*fc->log), GFP_KERNEL);

	if (!fc->log)

	fc->log.log = kzalloc(sizeof(*fc->log.log), GFP_KERNEL);

	if (!fc->log.log)

		return -ENOMEM;

	refcount_set(&fc->log->usage, 1);

	fc->log->owner = fc->fs_type->owner;

	refcount_set(&fc->log.log->usage, 1);

	fc->log.log->owner = fc->fs_type->owner;

	return 0;

}

include/linux/fs_context.h

+2 −2
Original line number Diff line number Diff line
@@ -97,7 +97,7 @@ struct fs_context { 
	struct user_namespace	*user_ns;	/* The user namespace for this mount */

	struct net		*net_ns;	/* The network namespace for this mount */

	const struct cred	*cred;		/* The mounter's credentials */

	struct fc_log		*log;		/* Logging buffer */

	struct p_log		log;		/* Logging buffer */

	const char		*source;	/* The source name (eg. dev path) */

	void			*security;	/* Linux S&M options */

	void			*s_fs_info;	/* Proposed s_fs_info */
@@ -189,7 +189,7 @@ struct fc_log { 
extern __attribute__((format(printf, 4, 5)))

void logfc(struct fc_log *log, const char *prefix, char level, const char *fmt, ...);



#define __logfc(fc, l, fmt, ...) logfc((fc)->log, NULL, \

#define __logfc(fc, l, fmt, ...) logfc((fc)->log.log, NULL, \

					l, fmt, ## __VA_ARGS__)

#define __plog(p, l, fmt, ...) logfc((p)->log, (p)->prefix, \

					l, fmt, ## __VA_ARGS__)

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