diff options
| author | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-25 19:00:24 -0500 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-03-10 15:34:09 -0400 |
| commit | eab0af905bfc3e9c05da2ca163d76a1513159aa4 (patch) | |
| tree | eb04fd45926173306a521194b78e2c049056ba87 /include/linux/sched | |
| parent | 3f6d5e6a468d02676244b868b210433831846127 (diff) | |
mm: introduce PF_MEMALLOC_NORECLAIM, PF_MEMALLOC_NOWARN
Introduce PF_MEMALLOC_* equivalents of some GFP_ flags:
PF_MEMALLOC_NORECLAIM -> GFP_NOWAIT
PF_MEMALLOC_NOWARN -> __GFP_NOWARN
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Darrick J. Wong <djwong@kernel.org>
Cc: linux-mm@kvack.org
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'include/linux/sched')
| -rw-r--r-- | include/linux/sched/mm.h | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h index f00d7ecc2adf..c29059a76052 100644 --- a/include/linux/sched/mm.h +++ b/include/linux/sched/mm.h @@ -236,16 +236,25 @@ static inline gfp_t current_gfp_context(gfp_t flags) { unsigned int pflags = READ_ONCE(current->flags); - if (unlikely(pflags & (PF_MEMALLOC_NOIO | PF_MEMALLOC_NOFS | PF_MEMALLOC_PIN))) { + if (unlikely(pflags & (PF_MEMALLOC_NOIO | + PF_MEMALLOC_NOFS | + PF_MEMALLOC_NORECLAIM | + PF_MEMALLOC_NOWARN | + PF_MEMALLOC_PIN))) { /* - * NOIO implies both NOIO and NOFS and it is a weaker context - * so always make sure it makes precedence + * Stronger flags before weaker flags: + * NORECLAIM implies NOIO, which in turn implies NOFS */ - if (pflags & PF_MEMALLOC_NOIO) + if (pflags & PF_MEMALLOC_NORECLAIM) + flags &= ~__GFP_DIRECT_RECLAIM; + else if (pflags & PF_MEMALLOC_NOIO) flags &= ~(__GFP_IO | __GFP_FS); else if (pflags & PF_MEMALLOC_NOFS) flags &= ~__GFP_FS; + if (pflags & PF_MEMALLOC_NOWARN) + flags |= __GFP_NOWARN; + if (pflags & PF_MEMALLOC_PIN) flags &= ~__GFP_MOVABLE; } |