diff mbox series

[075/146] mm/vmalloc: be more explicit about supported gfp flags.

Message ID 20220114220704.yBdrgAyd4%akpm@linux-foundation.org (mailing list archive)
State New
Headers show
Series [001/146] kthread: add the helper function kthread_run_on_cpu() | expand

Commit Message

Andrew Morton Jan. 14, 2022, 10:07 p.m. UTC
From: Michal Hocko <mhocko@suse.com>
Subject: mm/vmalloc: be more explicit about supported gfp flags.

b7d90e7a5ea8 ("mm/vmalloc: be more explicit about supported gfp flags")
has been merged prematurely without the rest of the series and without
addressed review feedback from Neil.  Fix that up now.  Only wording is
changed slightly.

Link: https://lkml.kernel.org/r/20211122153233.9924-4-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Ilya Dryomov <idryomov@gmail.com>
Cc: Jeff Layton <jlayton@kernel.org>
Cc: Neil Brown <neilb@suse.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/vmalloc.c |   14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)
diff mbox series

Patch

--- a/mm/vmalloc.c~mm-vmalloc-be-more-explicit-about-supported-gfp-flags
+++ a/mm/vmalloc.c
@@ -3031,12 +3031,14 @@  fail:
  *
  * Allocate enough pages to cover @size from the page level
  * allocator with @gfp_mask flags. Please note that the full set of gfp
- * flags are not supported. GFP_KERNEL would be a preferred allocation mode
- * but GFP_NOFS and GFP_NOIO are supported as well. Zone modifiers are not
- * supported. From the reclaim modifiers__GFP_DIRECT_RECLAIM is required (aka
- * GFP_NOWAIT is not supported) and only __GFP_NOFAIL is supported (aka
- * __GFP_NORETRY and __GFP_RETRY_MAYFAIL are not supported).
- * __GFP_NOWARN can be used to suppress error messages about failures.
+ * flags are not supported. GFP_KERNEL, GFP_NOFS and GFP_NOIO are all
+ * supported.
+ * Zone modifiers are not supported. From the reclaim modifiers
+ * __GFP_DIRECT_RECLAIM is required (aka GFP_NOWAIT is not supported)
+ * and only __GFP_NOFAIL is supported (i.e. __GFP_NORETRY and
+ * __GFP_RETRY_MAYFAIL are not supported).
+ *
+ * __GFP_NOWARN can be used to suppress failures messages.
  *
  * Map them into contiguous kernel virtual space, using a pagetable
  * protection of @prot.