diff options
| author | Len Brown <len.brown@intel.com> | 2012-06-04 00:35:19 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2012-06-04 00:35:19 -0400 |
| commit | 7e1bd6e38b1f30860ce25a014c6d6adfb0079f4a (patch) | |
| tree | 65c5898ba93007d4399150c7a127a670bcfbc30d /arch/cris/mm/fault.c | |
| parent | 301f33fbcf4ced53b3de114846ecece5d6aafeeb (diff) | |
| parent | f8f5701bdaf9134b1f90e5044a82c66324d2073f (diff) | |
| download | talos-op-linux-7e1bd6e38b1f30860ce25a014c6d6adfb0079f4a.tar.gz talos-op-linux-7e1bd6e38b1f30860ce25a014c6d6adfb0079f4a.zip | |
Merge branch 'upstream' into bugfix-video
Update bugfix-video branch to 2.5-rc1
so I don't have to again resolve the
conflict in these patches vs. upstream.
Conflicts:
drivers/gpu/drm/gma500/psb_drv.c
text conflict: add comment vs delete neighboring line
keep just this:
/* igd_opregion_init(&dev_priv->opregion_dev); */
/* acpi_video_register(); */
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/cris/mm/fault.c')
| -rw-r--r-- | arch/cris/mm/fault.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/arch/cris/mm/fault.c b/arch/cris/mm/fault.c index b4760d86e1bb..45fd542cf173 100644 --- a/arch/cris/mm/fault.c +++ b/arch/cris/mm/fault.c @@ -58,6 +58,8 @@ do_page_fault(unsigned long address, struct pt_regs *regs, struct vm_area_struct * vma; siginfo_t info; int fault; + unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE | + ((writeaccess & 1) ? FAULT_FLAG_WRITE : 0); D(printk(KERN_DEBUG "Page fault for %lX on %X at %lX, prot %d write %d\n", @@ -115,6 +117,7 @@ do_page_fault(unsigned long address, struct pt_regs *regs, if (in_atomic() || !mm) goto no_context; +retry: down_read(&mm->mmap_sem); vma = find_vma(mm, address); if (!vma) @@ -163,7 +166,11 @@ do_page_fault(unsigned long address, struct pt_regs *regs, * the fault. */ - fault = handle_mm_fault(mm, vma, address, (writeaccess & 1) ? FAULT_FLAG_WRITE : 0); + fault = handle_mm_fault(mm, vma, address, flags); + + if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current)) + return; + if (unlikely(fault & VM_FAULT_ERROR)) { if (fault & VM_FAULT_OOM) goto out_of_memory; @@ -171,10 +178,24 @@ do_page_fault(unsigned long address, struct pt_regs *regs, goto do_sigbus; BUG(); } - if (fault & VM_FAULT_MAJOR) - tsk->maj_flt++; - else - tsk->min_flt++; + + if (flags & FAULT_FLAG_ALLOW_RETRY) { + if (fault & VM_FAULT_MAJOR) + tsk->maj_flt++; + else + tsk->min_flt++; + if (fault & VM_FAULT_RETRY) { + flags &= ~FAULT_FLAG_ALLOW_RETRY; + + /* + * No need to up_read(&mm->mmap_sem) as we would + * have already released it in __lock_page_or_retry + * in mm/filemap.c. + */ + + goto retry; + } + } up_read(&mm->mmap_sem); return; |
