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| author | Eric B Munson <emunson@akamai.com> | 2015-11-05 18:51:33 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-05 19:34:48 -0800 |
| commit | a8ca5d0ecbdde5cc3d7accacbd69968b0c98764e (patch) | |
| tree | d2f49d50d2fc30d86c364909a7095c752dfd5e4d /mm/mlock.c | |
| parent | 1aab92ec3de552362397b718744872ea2d17add2 (diff) | |
| download | linux-a8ca5d0ecbdde5cc3d7accacbd69968b0c98764e.tar.gz linux-a8ca5d0ecbdde5cc3d7accacbd69968b0c98764e.tar.bz2 linux-a8ca5d0ecbdde5cc3d7accacbd69968b0c98764e.zip | |
mm: mlock: add new mlock system call
With the refactored mlock code, introduce a new system call for mlock.
The new call will allow the user to specify what lock states are being
added. mlock2 is trivial at the moment, but a follow on patch will add a
new mlock state making it useful.
Signed-off-by: Eric B Munson <emunson@akamai.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mlock.c')
| -rw-r--r-- | mm/mlock.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/mlock.c b/mm/mlock.c index fbd8c03f7b37..35dcf8fa7195 100644 --- a/mm/mlock.c +++ b/mm/mlock.c @@ -644,6 +644,14 @@ SYSCALL_DEFINE2(mlock, unsigned long, start, size_t, len) return do_mlock(start, len, VM_LOCKED); } +SYSCALL_DEFINE3(mlock2, unsigned long, start, size_t, len, int, flags) +{ + if (flags) + return -EINVAL; + + return do_mlock(start, len, VM_LOCKED); +} + SYSCALL_DEFINE2(munlock, unsigned long, start, size_t, len) { int ret; |