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bcache: Convert to use sysfs_emit()/sysfs_emit_at() APIs 

Follow the advice of the Documentation/filesystems/sysfs.rst and show()
should only use sysfs_emit() or sysfs_emit_at() when formatting the
value to be returned to user space.

Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Signed-off-by: Coly Li <colyli@suse.de>
Link: https://lore.kernel.org/r/20230615121223.22502-2-colyli@suse.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
ye xingchen 2023-06-15 20:12:18 +08:00 committed by Jens Axboe
parent dd7de3704a
commit a301b2deb6
1 changed files with 15 additions and 16 deletions
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31
drivers/md/bcache/sysfs.c
View File

@ -1111,26 +1111,25 @@ SHOW(__bch_cache)
vfree(p);
ret = scnprintf(buf, PAGE_SIZE,
"Unused: %zu%%\n"
"Clean: %zu%%\n"
"Dirty: %zu%%\n"
"Metadata: %zu%%\n"
"Average: %llu\n"
"Sectors per Q: %zu\n"
"Quantiles: [",
unused * 100 / (size_t) ca->sb.nbuckets,
available * 100 / (size_t) ca->sb.nbuckets,
dirty * 100 / (size_t) ca->sb.nbuckets,
meta * 100 / (size_t) ca->sb.nbuckets, sum,
n * ca->sb.bucket_size / (ARRAY_SIZE(q) + 1));
ret = sysfs_emit(buf,
"Unused: %zu%%\n"
"Clean: %zu%%\n"
"Dirty: %zu%%\n"
"Metadata: %zu%%\n"
"Average: %llu\n"
"Sectors per Q: %zu\n"
"Quantiles: [",
unused * 100 / (size_t) ca->sb.nbuckets,
available * 100 / (size_t) ca->sb.nbuckets,
dirty * 100 / (size_t) ca->sb.nbuckets,
meta * 100 / (size_t) ca->sb.nbuckets, sum,
n * ca->sb.bucket_size / (ARRAY_SIZE(q) + 1));
for (i = 0; i < ARRAY_SIZE(q); i++)
ret += scnprintf(buf + ret, PAGE_SIZE - ret,
"%u ", q[i]);
ret += sysfs_emit_at(buf, ret, "%u ", q[i]);
ret--;
ret += scnprintf(buf + ret, PAGE_SIZE - ret, "]\n");
ret += sysfs_emit_at(buf, ret, "]\n");
return ret;
}