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device_mapper: slight improvement of tok_match

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Reduce amount of unnecessary instructions for some code paths.
This commit is contained in:
Zdenek Kabelac 2024-10-09 17:16:44 +02:00 committed by David Teigland
parent 00a8946e46
commit eea78613ef
1 changed files with 8 additions and 3 deletions
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11
device_mapper/libdm-config.c
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@ -85,14 +85,19 @@ static char *_dup_token(struct dm_pool *mem, const char *b, const char *e);
} \ } \
} while(0) } while(0)
/* match token */
static int _tok_match(const char *str, const char *b, const char *e) static int _tok_match(const char *str, const char *b, const char *e)
{ {
while (*str && (b != e)) { while (b < e) {
if (*str++ != *b++) if (*str != *b)
return 0; return 0;
if (!*str)
return 0;
++str;
++b;
} }
return !(*str || (b != e)); return !*str; /* token is matching for \0 end */
} }
struct dm_config_tree *dm_config_create(void) struct dm_config_tree *dm_config_create(void)