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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2018-05-28 10:37:43 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-05-28 23:53:20 +0300 |
| commit | ecb37ce9baac653cc09e2b631393dde3df82979f (patch) | |
| tree | f853a5d53da1577708975cae8aa0775039e279d0 /drivers/md/bcache/sysfs.c | |
| parent | 04cbc21137bfa4d7b8771a5b14f3d6c9b2aee671 (diff) | |
| download | linux-ecb37ce9baac653cc09e2b631393dde3df82979f.tar.xz | |
bcache: Move couple of functions to sysfs.c
There is couple of functions that are used exclusively in sysfs.c.
Move it to there and make them static.
Besides above, it will allow further clean up.
No functional change intended.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/bcache/sysfs.c')
| -rw-r--r-- | drivers/md/bcache/sysfs.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c index 0275450a0da9..36f4396dbd63 100644 --- a/drivers/md/bcache/sysfs.c +++ b/drivers/md/bcache/sysfs.c @@ -132,6 +132,41 @@ rw_attribute(btree_shrinker_disabled); rw_attribute(copy_gc_enabled); rw_attribute(size); +static ssize_t bch_snprint_string_list(char *buf, size_t size, const char * const list[], + size_t selected) +{ + char *out = buf; + size_t i; + + for (i = 0; list[i]; i++) + out += snprintf(out, buf + size - out, + i == selected ? "[%s] " : "%s ", list[i]); + + out[-1] = '\n'; + return out - buf; +} + +static ssize_t bch_read_string_list(const char *buf, const char * const list[]) +{ + size_t i; + char *s, *d = kstrndup(buf, PAGE_SIZE - 1, GFP_KERNEL); + if (!d) + return -ENOMEM; + + s = strim(d); + + for (i = 0; list[i]; i++) + if (!strcmp(list[i], s)) + break; + + kfree(d); + + if (!list[i]) + return -EINVAL; + + return i; +} + SHOW(__bch_cached_dev) { struct cached_dev *dc = container_of(kobj, struct cached_dev, |