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struct p_log, variants of warnf() et.al. taking that one instead

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primitives for prefixed logging

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2019-12-20 23:43:32 -05:00
parent 9f09f649ca
commit 3fbb8d5554
2 changed files with 12 additions and 0 deletions
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1
drivers/block/rbd.c
View File

@ -6353,6 +6353,7 @@ static int rbd_parse_param(struct fs_parameter *param,
{
struct rbd_options *opt = pctx->opts;
struct fs_parse_result result;
struct p_log log = {.prefix = "rbd"};
int token, ret;
ret = ceph_parse_param(param, pctx->copts, NULL);

11
include/linux/fs_context.h
View File

@ -73,6 +73,11 @@ struct fs_parameter {
int dirfd;
};
struct p_log {
const char *prefix;
struct fc_log *log;
};
/*
* Filesystem context for holding the parameters used in the creation or
* reconfiguration of a superblock.
@ -188,6 +193,8 @@ void logfc(struct fc_log *log, const char *prefix, char level, const char *fmt,
struct fs_context *__fc = (fc); \
logfc(__fc ? __fc->log : NULL, NULL, \
l, fmt, ## __VA_ARGS__);})
#define __plog(p, l, fmt, ...) logfc((p)->log, (p)->prefix, \
l, fmt, ## __VA_ARGS__)
/**
* infof - Store supplementary informational message
* @fc: The context in which to log the informational message
@ -197,6 +204,7 @@ void logfc(struct fc_log *log, const char *prefix, char level, const char *fmt,
* has enabled the facility.
*/
#define infof(fc, fmt, ...) __logfc(fc, 'i', fmt, ## __VA_ARGS__)
#define info_plog(p, fmt, ...) __plog(p, 'i', fmt, ## __VA_ARGS__)
/**
* warnf - Store supplementary warning message
@ -207,6 +215,7 @@ void logfc(struct fc_log *log, const char *prefix, char level, const char *fmt,
* enabled the facility.
*/
#define warnf(fc, fmt, ...) __logfc(fc, 'w', fmt, ## __VA_ARGS__)
#define warn_plog(p, fmt, ...) __plog(p, 'w', fmt, ## __VA_ARGS__)
/**
* errorf - Store supplementary error message
@ -217,6 +226,7 @@ void logfc(struct fc_log *log, const char *prefix, char level, const char *fmt,
* enabled the facility.
*/
#define errorf(fc, fmt, ...) __logfc(fc, 'e', fmt, ## __VA_ARGS__)
#define error_plog(p, fmt, ...) __plog(p, 'e', fmt, ## __VA_ARGS__)
/**
* invalf - Store supplementary invalid argument error message
@ -227,5 +237,6 @@ void logfc(struct fc_log *log, const char *prefix, char level, const char *fmt,
* enabled the facility and return -EINVAL.
*/
#define invalf(fc, fmt, ...) (errorf(fc, fmt, ## __VA_ARGS__), -EINVAL)
#define inval_plog(p, fmt, ...) (error_plog(p, fmt, ## __VA_ARGS__), -EINVAL)
#endif /* _LINUX_FS_CONTEXT_H */