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Subject[trivial PATCH] vfs: fs_context: Deduplicate logging calls to reduce object size
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Date
Deduplicate the logging calls by using a temporary for KERN_<LEVEL>
with miscellaneous source code neatening of the output calls.

$ size fs/fs_context.o* #defconfig x86_64
text data bss dec hex filename
6727 192 0 6919 1b07 fs/fs_context.o.new
6802 192 0 6994 1b52 fs/fs_context.o.old

Signed-off-by: Joe Perches <joe@perches.com>
---
fs/fs_context.c | 27 +++++++++++++++++----------
1 file changed, 17 insertions(+), 10 deletions(-)

diff --git a/fs/fs_context.c b/fs/fs_context.c
index 2834d1afa6e80..2a6ff20da40f5 100644
--- a/fs/fs_context.c
+++ b/fs/fs_context.c
@@ -359,33 +359,40 @@ EXPORT_SYMBOL(vfs_dup_fs_context);
* @fc: The filesystem context to log to.
* @fmt: The format of the buffer.
*/
-void logfc(struct fc_log *log, const char *prefix, char level, const char *fmt, ...)
+void logfc(struct fc_log *log, const char *prefix, char level,
+ const char *fmt, ...)
{
va_list va;
struct va_format vaf = {.fmt = fmt, .va = &va};

va_start(va, fmt);
if (!log) {
+ const char *kern_level;
+
switch (level) {
case 'w':
- printk(KERN_WARNING "%s%s%pV\n", prefix ? prefix : "",
- prefix ? ": " : "", &vaf);
+ kern_level = KERN_WARNING;
break;
case 'e':
- printk(KERN_ERR "%s%s%pV\n", prefix ? prefix : "",
- prefix ? ": " : "", &vaf);
+ kern_level = KERN_ERR;
break;
default:
- printk(KERN_NOTICE "%s%s%pV\n", prefix ? prefix : "",
- prefix ? ": " : "", &vaf);
+ kern_level = KERN_NOTICE;
break;
}
+ printk("%s%s%s%pV\n",
+ kern_level,
+ prefix ? prefix : "",
+ prefix ? ": " : "",
+ &vaf);
} else {
unsigned int logsize = ARRAY_SIZE(log->buffer);
u8 index;
- char *q = kasprintf(GFP_KERNEL, "%c %s%s%pV\n", level,
- prefix ? prefix : "",
- prefix ? ": " : "", &vaf);
+ char *q = kasprintf(GFP_KERNEL, "%c %s%s%pV\n",
+ level,
+ prefix ? prefix : "",
+ prefix ? ": " : "",
+ &vaf);

index = log->head & (logsize - 1);
BUILD_BUG_ON(sizeof(log->head) != sizeof(u8) ||

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