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| author | Jiri Slaby <jslaby@suse.cz> | 2010-01-27 17:32:22 +0100 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2010-01-27 15:17:31 -0800 |
| commit | 2854e72b58dad82f5248b30a45dda0df49e5fe05 (patch) | |
| tree | 6fb25ecf139c223fbb6d6c25e31ff1d2f93ec668 | |
| parent | be8cde8b24c9dca1e54598690115eee5b1476519 (diff) | |
| download | linux-3.10-2854e72b58dad82f5248b30a45dda0df49e5fe05.tar.gz linux-3.10-2854e72b58dad82f5248b30a45dda0df49e5fe05.tar.bz2 linux-3.10-2854e72b58dad82f5248b30a45dda0df49e5fe05.zip | |
x86: Use helpers for rlimits
Make sure compiler won't do weird things with limits. Fetching them
twice may return 2 different values after writable limits are
implemented.
We can either use rlimit helpers added in
3e10e716abf3c71bdb5d86b8f507f9e72236c9cd or ACCESS_ONCE if not
applicable; this patch uses the helpers.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
LKML-Reference: <1264609942-24621-1-git-send-email-jslaby@suse.cz>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| -rw-r--r-- | arch/x86/ia32/ia32_aout.c | 2 | ||||
| -rw-r--r-- | arch/x86/mm/mmap.c | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c index 2a4d073d2cf..06474788723 100644 --- a/arch/x86/ia32/ia32_aout.c +++ b/arch/x86/ia32/ia32_aout.c @@ -297,7 +297,7 @@ static int load_aout_binary(struct linux_binprm *bprm, struct pt_regs *regs) * size limits imposed on them by creating programs with large * arrays in the data or bss. */ - rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur; + rlim = rlimit(RLIMIT_DATA); if (rlim >= RLIM_INFINITY) rlim = ~0; if (ex.a_data + ex.a_bss > rlim) diff --git a/arch/x86/mm/mmap.c b/arch/x86/mm/mmap.c index c8191defc38..1dab5194fd9 100644 --- a/arch/x86/mm/mmap.c +++ b/arch/x86/mm/mmap.c @@ -71,7 +71,7 @@ static int mmap_is_legacy(void) if (current->personality & ADDR_COMPAT_LAYOUT) return 1; - if (current->signal->rlim[RLIMIT_STACK].rlim_cur == RLIM_INFINITY) + if (rlimit(RLIMIT_STACK) == RLIM_INFINITY) return 1; return sysctl_legacy_va_layout; @@ -96,7 +96,7 @@ static unsigned long mmap_rnd(void) static unsigned long mmap_base(void) { - unsigned long gap = current->signal->rlim[RLIMIT_STACK].rlim_cur; + unsigned long gap = rlimit(RLIMIT_STACK); if (gap < MIN_GAP) gap = MIN_GAP; |