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authorzhong jiang <zhongjiang@huawei.com>2018-10-26 15:06:57 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-10-26 16:26:33 -0700
commitdedf2c73b80b4566dfcae8ebe9ed46a38b63a1f9 (patch)
tree1f6c11fcbe8fbde13cf579a23a82f30fd95caf2b /mm/mempolicy.c
parentc3df29d13044d885695067fa0b1386824942557a (diff)
downloadlinux-dedf2c73b80b4566dfcae8ebe9ed46a38b63a1f9.tar.bz2
mm/mempolicy.c: use match_string() helper to simplify the code
match_string() returns the index of an array for a matching string, which can be used intead of open coded implementation. Link: http://lkml.kernel.org/r/1536988365-50310-1-git-send-email-zhongjiang@huawei.com Signed-off-by: zhong jiang <zhongjiang@huawei.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mempolicy.c')
-rw-r--r--mm/mempolicy.c11
1 files changed, 3 insertions, 8 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 2e76a8f65e94..cfd26d7e61a1 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -2711,12 +2711,11 @@ static const char * const policy_modes[] =
int mpol_parse_str(char *str, struct mempolicy **mpol)
{
struct mempolicy *new = NULL;
- unsigned short mode;
unsigned short mode_flags;
nodemask_t nodes;
char *nodelist = strchr(str, ':');
char *flags = strchr(str, '=');
- int err = 1;
+ int err = 1, mode;
if (nodelist) {
/* NUL-terminate mode or flags string */
@@ -2731,12 +2730,8 @@ int mpol_parse_str(char *str, struct mempolicy **mpol)
if (flags)
*flags++ = '\0'; /* terminate mode string */
- for (mode = 0; mode < MPOL_MAX; mode++) {
- if (!strcmp(str, policy_modes[mode])) {
- break;
- }
- }
- if (mode >= MPOL_MAX)
+ mode = match_string(policy_modes, MPOL_MAX, str);
+ if (mode < 0)
goto out;
switch (mode) {