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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-02-18 18:28:37 +0300 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-02-18 18:28:37 +0300 |
| commit | 65d2918e716afb89359cfa59734d76c1ff8700cb (patch) | |
| tree | 4685404f96642243d62c3a1a823340913d087090 /arch/powerpc/mm/tlb_nohash.c | |
| parent | bf40e5561fd288a505d5d8d8bf45eef96fe7253d (diff) | |
| parent | 338d00cfef07d74a072f96821c64b20f98517d72 (diff) | |
| download | linux-65d2918e716afb89359cfa59734d76c1ff8700cb.tar.xz | |
Merge branch 'cleanups'
Merge cleanups requested by Linus.
* cleanups: (3 commits)
pnfs: Refactor the *_layout_mark_request_commit to use pnfs_layout_mark_request_commit
nfs: Can call nfs_clear_page_commit() instead
nfs: Provide and use helper functions for marking a page as unstable
Diffstat (limited to 'arch/powerpc/mm/tlb_nohash.c')
| -rw-r--r-- | arch/powerpc/mm/tlb_nohash.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c index f38ea4df6a85..cbd3d069897f 100644 --- a/arch/powerpc/mm/tlb_nohash.c +++ b/arch/powerpc/mm/tlb_nohash.c @@ -284,8 +284,15 @@ void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr, struct cpumask *cpu_mask; unsigned int pid; + /* + * This function as well as __local_flush_tlb_page() must only be called + * for user contexts. + */ + if (unlikely(WARN_ON(!mm))) + return; + preempt_disable(); - pid = mm ? mm->context.id : 0; + pid = mm->context.id; if (unlikely(pid == MMU_NO_CONTEXT)) goto bail; cpu_mask = mm_cpumask(mm); |