The patch titled
Subject: mm/vmalloc: remove gfpflags_allow_blocking() check
has been added to the -mm tree. Its filename is
mm-vmalloc-remove-gfpflags_allow_blocking-check.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-vmalloc-remove-gfpflags_allow_blocking-check.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-vmalloc-remove-gfpflags_allow_blocking-check.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: "Uladzislau Rezki (Sony)" <urezki@xxxxxxxxx>
Subject: mm/vmalloc: remove gfpflags_allow_blocking() check
Get rid of gfpflags_allow_blocking() check from the vmalloc() path as it
is supposed to be sleepable anyway. Thus remove it from the
alloc_vmap_area() as well as from the vm_area_alloc_pages().
Link: https://lkml.kernel.org/r/20210707182639.31282-2-urezki@xxxxxxxxx
Signed-off-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
Cc: Hillf Danton <hdanton@xxxxxxxx>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@xxxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmalloc.c | 18 ++++++++----------
1 file changed, 8 insertions(+), 10 deletions(-)
--- a/mm/vmalloc.c~mm-vmalloc-remove-gfpflags_allow_blocking-check
+++ a/mm/vmalloc.c
@@ -1479,6 +1479,7 @@ static struct vmap_area *alloc_vmap_area
int node, gfp_t gfp_mask)
{
struct vmap_area *va;
+ unsigned long freed;
unsigned long addr;
int purged = 0;
int ret;
@@ -1542,13 +1543,12 @@ overflow:
goto retry;
}
- if (gfpflags_allow_blocking(gfp_mask)) {
- unsigned long freed = 0;
- blocking_notifier_call_chain(&vmap_notify_list, 0, &freed);
- if (freed > 0) {
- purged = 0;
- goto retry;
- }
+ freed = 0;
+ blocking_notifier_call_chain(&vmap_notify_list, 0, &freed);
+
+ if (freed > 0) {
+ purged = 0;
+ goto retry;
}
if (!(gfp_mask & __GFP_NOWARN) && printk_ratelimit())
@@ -2838,9 +2838,7 @@ vm_area_alloc_pages(gfp_t gfp, int nid,
for (i = 0; i < (1U << order); i++)
pages[nr_allocated + i] = page + i;
- if (gfpflags_allow_blocking(gfp))
- cond_resched();
-
+ cond_resched();
nr_allocated += 1U << order;
}
_
Patches currently in -mm which might be from urezki@xxxxxxxxx are
mm-vmalloc-use-batched-page-requests-in-bulk-allocator.patch
mm-vmalloc-remove-gfpflags_allow_blocking-check.patch
