drivers/hwtracing/intel_th/msu.c: change return type to vm_fault_t

Use new return type vm_fault_t for fault handler.  For now, this is just
documenting that the function returns a VM_FAULT value rather than an
errno.  Once all instances are converted, vm_fault_t will become a
distinct type.

See 1c8f422059ae ("mm: change return type to vm_fault_t") for reference.

Link: http://lkml.kernel.org/r/20180702155801.GA4010@jordon-HP-15-Notebook-PC
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index 634f58042c77f36b7e512a84510e2ac8947eab0e..d293e55553bd690ffc54f97a2b5e6b85916e2865 100644 (file)
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -1182,7 +1182,7 @@ static void msc_mmap_close(struct vm_area_struct *vma)
        mutex_unlock(&msc->buf_mutex);
 }
 
-static int msc_mmap_fault(struct vm_fault *vmf)
+static vm_fault_t msc_mmap_fault(struct vm_fault *vmf)
 {
        struct msc_iter *iter = vmf->vma->vm_file->private_data;
        struct msc *msc = iter->msc;