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xfs: define printk_once variants for xfs messages

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There are a couple places where we directly call printk_once() and one
of them doesn't follow the standard xfs subsystem printk format as a
result.

#define printk_once variants to go with our existing printk_ratelimited
#defines so we can do one-shot printks in a consistent manner.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Eric Sandeen 2020-04-27 11:00:42 -07:00 committed by Darrick J. Wong
parent 166405f6b5
commit ec43f6da31
3 changed files with 24 additions and 9 deletions
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21
fs/xfs/xfs_message.h
View File

@ -31,15 +31,27 @@ void xfs_debug(const struct xfs_mount *mp, const char *fmt, ...)
} }
#endif #endif
#define xfs_printk_ratelimited(func, dev, fmt, ...) \ #define xfs_printk_ratelimited(func, dev, fmt, ...) \
do { \ do { \
static DEFINE_RATELIMIT_STATE(_rs, \ static DEFINE_RATELIMIT_STATE(_rs, \
DEFAULT_RATELIMIT_INTERVAL, \ DEFAULT_RATELIMIT_INTERVAL, \
DEFAULT_RATELIMIT_BURST); \ DEFAULT_RATELIMIT_BURST); \
if (__ratelimit(&_rs)) \ if (__ratelimit(&_rs)) \
func(dev, fmt, ##__VA_ARGS__); \ func(dev, fmt, ##__VA_ARGS__); \
} while (0) } while (0)
#define xfs_printk_once(func, dev, fmt, ...) \
({ \
static bool __section(.data.once) __print_once; \
bool __ret_print_once = !__print_once; \
\
if (!__print_once) { \
__print_once = true; \
func(dev, fmt, ##__VA_ARGS__); \
} \
unlikely(__ret_print_once); \
})
#define xfs_emerg_ratelimited(dev, fmt, ...) \ #define xfs_emerg_ratelimited(dev, fmt, ...) \
xfs_printk_ratelimited(xfs_emerg, dev, fmt, ##__VA_ARGS__) xfs_printk_ratelimited(xfs_emerg, dev, fmt, ##__VA_ARGS__)
#define xfs_alert_ratelimited(dev, fmt, ...) \ #define xfs_alert_ratelimited(dev, fmt, ...) \
@ -57,6 +69,11 @@ do { \
#define xfs_debug_ratelimited(dev, fmt, ...) \ #define xfs_debug_ratelimited(dev, fmt, ...) \
xfs_printk_ratelimited(xfs_debug, dev, fmt, ##__VA_ARGS__) xfs_printk_ratelimited(xfs_debug, dev, fmt, ##__VA_ARGS__)
#define xfs_warn_once(dev, fmt, ...) \
xfs_printk_once(xfs_warn, dev, fmt, ##__VA_ARGS__)
#define xfs_notice_once(dev, fmt, ...) \
xfs_printk_once(xfs_notice, dev, fmt, ##__VA_ARGS__)
void assfail(struct xfs_mount *mp, char *expr, char *f, int l); void assfail(struct xfs_mount *mp, char *expr, char *f, int l);
void asswarn(struct xfs_mount *mp, char *expr, char *f, int l); void asswarn(struct xfs_mount *mp, char *expr, char *f, int l);

7
fs/xfs/xfs_mount.c
View File

@ -1300,10 +1300,9 @@ xfs_mod_fdblocks(
spin_unlock(&mp->m_sb_lock); spin_unlock(&mp->m_sb_lock);
return 0; return 0;
} }
printk_once(KERN_WARNING xfs_warn_once(mp,
"Filesystem \"%s\": reserve blocks depleted! " "Reserve blocks depleted! Consider increasing reserve pool size.");
"Consider increasing reserve pool size.",
mp->m_super->s_id);
fdblocks_enospc: fdblocks_enospc:
spin_unlock(&mp->m_sb_lock); spin_unlock(&mp->m_sb_lock);
return -ENOSPC; return -ENOSPC;

5
fs/xfs/xfs_pnfs.c
View File

@ -58,9 +58,8 @@ xfs_fs_get_uuid(
{ {
struct xfs_mount *mp = XFS_M(sb); struct xfs_mount *mp = XFS_M(sb);
printk_once(KERN_NOTICE xfs_notice_once(mp,
"XFS (%s): using experimental pNFS feature, use at your own risk!\n", "Using experimental pNFS feature, use at your own risk!");
mp->m_super->s_id);
if (*len < sizeof(uuid_t)) if (*len < sizeof(uuid_t))
return -EINVAL; return -EINVAL;