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| author | Alexey Klimov <klimov.linux@gmail.com> | 2015-11-05 18:46:00 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-05 19:34:48 -0800 |
| commit | 86d2adccfbe7d5a1f050fa08db9638c9168736d9 (patch) | |
| tree | 96dcb3362de8603a9e8be77498eb3edc57d46d1d | |
| parent | 9fbed25407ccc87a7bb47ea3f411e1ca34a95f8b (diff) | |
| download | linux-rpi-86d2adccfbe7d5a1f050fa08db9638c9168736d9.tar.gz linux-rpi-86d2adccfbe7d5a1f050fa08db9638c9168736d9.tar.bz2 linux-rpi-86d2adccfbe7d5a1f050fa08db9638c9168736d9.zip | |
mm/mlock.c: reorganize mlockall() return values and remove goto-out label
In mlockall syscall wrapper after out-label for goto code just doing
return. Remove goto out statements and return error values directly.
Also instead of rewriting ret variable before every if-check move returns
to 'error'-like path under if-check.
Objdump asm listing showed me reducing by few asm lines. Object file size
descreased from 220592 bytes to 220528 bytes for me (for aarch64).
Signed-off-by: Alexey Klimov <klimov.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/mlock.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/mm/mlock.c b/mm/mlock.c index 25936680064f..7e6ad9c4c549 100644 --- a/mm/mlock.c +++ b/mm/mlock.c @@ -684,14 +684,13 @@ out: SYSCALL_DEFINE1(mlockall, int, flags) { unsigned long lock_limit; - int ret = -EINVAL; + int ret; if (!flags || (flags & ~(MCL_CURRENT | MCL_FUTURE))) - goto out; + return -EINVAL; - ret = -EPERM; if (!can_do_mlock()) - goto out; + return -EPERM; if (flags & MCL_CURRENT) lru_add_drain_all(); /* flush pagevec */ @@ -708,7 +707,7 @@ SYSCALL_DEFINE1(mlockall, int, flags) up_write(¤t->mm->mmap_sem); if (!ret && (flags & MCL_CURRENT)) mm_populate(0, TASK_SIZE); -out: + return ret; } |