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| author |   David Woodhouse <dwmw2@infradead.org> | 2007-07-23 10:20:10 +0100 |
|---|---|---|
| committer | David Woodhouse <dwmw2@infradead.org> | 2007-07-23 10:20:10 +0100 |
| commit | 39fe5434cb9de5da40510028b17b96bc4eb312b3 (patch) | |
| tree | 7a02a317b9ad57da51ca99887c119e779ccf3f13 /include/linux/spinlock.h | |
| parent | [JFFS2] Add declaration of jffs2_lzo_{init,exit} to compr.h (diff) | |
| parent | Linux 2.6.23-rc1 (diff) | |
| download | linux-dev-39fe5434cb9de5da40510028b17b96bc4eb312b3.tar.xz linux-dev-39fe5434cb9de5da40510028b17b96bc4eb312b3.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'include/linux/spinlock.h')
| -rw-r--r-- | include/linux/spinlock.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h index a946176db638..c376f3b36c89 100644 --- a/include/linux/spinlock.h +++ b/include/linux/spinlock.h @@ -282,6 +282,13 @@ do { \ 1 : ({ local_irq_restore(flags); 0; }); \ }) +#define write_trylock_irqsave(lock, flags) \ +({ \ + local_irq_save(flags); \ + write_trylock(lock) ? \ + 1 : ({ local_irq_restore(flags); 0; }); \ +}) + /* * Locks two spinlocks l1 and l2. * l1_first indicates if spinlock l1 should be taken first. |