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| author | Ingo Molnar <mingo@elte.hu> | 2009-01-11 15:34:05 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-11 15:34:05 +0100 |
| commit | d19b85db9d5c44a4c21dcb10d6fbadaa4425ab2a (patch) | |
| tree | 250be7a5a29069f7d1f4524fa45ab0e988833025 /ipc/shm.c | |
| parent | itimers: remove the per-cpu-ish-ness (diff) | |
| parent | Linux 2.6.29-rc1 (diff) | |
| download | linux-d19b85db9d5c44a4c21dcb10d6fbadaa4425ab2a.tar.xz linux-d19b85db9d5c44a4c21dcb10d6fbadaa4425ab2a.zip | |
Merge commit 'v2.6.29-rc1' into timers/urgent
Diffstat (limited to 'ipc/shm.c')
| -rw-r--r-- | ipc/shm.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/ipc/shm.c b/ipc/shm.c index b125b560240e..d0ab5527bf45 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -990,6 +990,7 @@ asmlinkage long sys_shmdt(char __user *shmaddr) */ vma = find_vma(mm, addr); +#ifdef CONFIG_MMU while (vma) { next = vma->vm_next; @@ -1034,6 +1035,17 @@ asmlinkage long sys_shmdt(char __user *shmaddr) vma = next; } +#else /* CONFIG_MMU */ + /* under NOMMU conditions, the exact address to be destroyed must be + * given */ + retval = -EINVAL; + if (vma->vm_start == addr && vma->vm_ops == &shm_vm_ops) { + do_munmap(mm, vma->vm_start, vma->vm_end - vma->vm_start); + retval = 0; + } + +#endif + up_write(&mm->mmap_sem); return retval; } |