github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-01 19:13:47 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

[POWERPC] Fix idr locking in init_new_context

Browse Source 
We always need to serialize accesses to mmu_context_idr.

I hit this bug when testing with a small number of mmu contexts.

Signed-off-by: Sonny Rao <sonny@burdell.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Sonny Rao 2006-06-27 08:46:09 -04:00 committed by Paul Mackerras
parent 975b365895
commit f86c9747fe
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/mm/mmu_context_64.c
View File

@ -44,7 +44,9 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
return err;
if (index > MAX_CONTEXT) {
spin_lock(&mmu_context_lock);
idr_remove(&mmu_context_idr, index);
spin_unlock(&mmu_context_lock);
return -ENOMEM;
}