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authorStephen Rothwell <sfr@canb.auug.org.au>2022-06-28 16:54:05 +1000
committerStephen Rothwell <sfr@canb.auug.org.au>2022-06-28 16:54:05 +1000
commit5f9df76887bf8170e8844f1907c13fbbb30e9c36 (patch)
tree3b940f7e1c36605af69ffe3a3e9bc8fa53bd12a1 /drivers/misc/cxl/fault.c
parent8f850ad6cf932b8b5125f9585cb397e08403cccd (diff)
parent84b494dcbcc015419e629ced664d3b737e83336e (diff)
downloadlinux-next-akpm.tar.gz
linux-next-akpm.zip
Merge branch 'mm-everything' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mmakpm-baseakpm
# Conflicts: # include/linux/pagevec.h
Diffstat (limited to 'drivers/misc/cxl/fault.c')
-rw-r--r--drivers/misc/cxl/fault.c45
1 files changed, 15 insertions, 30 deletions
diff --git a/drivers/misc/cxl/fault.c b/drivers/misc/cxl/fault.c
index 60c829113299..2c64f55cf01f 100644
--- a/drivers/misc/cxl/fault.c
+++ b/drivers/misc/cxl/fault.c
@@ -280,22 +280,6 @@ void cxl_handle_fault(struct work_struct *fault_work)
mmput(mm);
}
-static void cxl_prefault_one(struct cxl_context *ctx, u64 ea)
-{
- struct mm_struct *mm;
-
- mm = get_mem_context(ctx);
- if (mm == NULL) {
- pr_devel("cxl_prefault_one unable to get mm %i\n",
- pid_nr(ctx->pid));
- return;
- }
-
- cxl_fault_segment(ctx, mm, ea);
-
- mmput(mm);
-}
-
static u64 next_segment(u64 ea, u64 vsid)
{
if (vsid & SLB_VSID_B_1T)
@@ -306,23 +290,16 @@ static u64 next_segment(u64 ea, u64 vsid)
return ea + 1;
}
-static void cxl_prefault_vma(struct cxl_context *ctx)
+static void cxl_prefault_vma(struct cxl_context *ctx, struct mm_struct *mm)
{
u64 ea, last_esid = 0;
struct copro_slb slb;
+ VMA_ITERATOR(vmi, mm, 0);
struct vm_area_struct *vma;
int rc;
- struct mm_struct *mm;
-
- mm = get_mem_context(ctx);
- if (mm == NULL) {
- pr_devel("cxl_prefault_vm unable to get mm %i\n",
- pid_nr(ctx->pid));
- return;
- }
mmap_read_lock(mm);
- for (vma = mm->mmap; vma; vma = vma->vm_next) {
+ for_each_vma(vmi, vma) {
for (ea = vma->vm_start; ea < vma->vm_end;
ea = next_segment(ea, slb.vsid)) {
rc = copro_calculate_slb(mm, ea, &slb);
@@ -337,20 +314,28 @@ static void cxl_prefault_vma(struct cxl_context *ctx)
}
}
mmap_read_unlock(mm);
-
- mmput(mm);
}
void cxl_prefault(struct cxl_context *ctx, u64 wed)
{
+ struct mm_struct *mm = get_mem_context(ctx);
+
+ if (mm == NULL) {
+ pr_devel("cxl_prefault unable to get mm %i\n",
+ pid_nr(ctx->pid));
+ return;
+ }
+
switch (ctx->afu->prefault_mode) {
case CXL_PREFAULT_WED:
- cxl_prefault_one(ctx, wed);
+ cxl_fault_segment(ctx, mm, wed);
break;
case CXL_PREFAULT_ALL:
- cxl_prefault_vma(ctx);
+ cxl_prefault_vma(ctx, mm);
break;
default:
break;
}
+
+ mmput(mm);
}