diff options
| author | Eric Dumazet <edumazet@google.com> | 2014-08-06 16:06:25 -0700 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2019-05-02 21:10:32 +0200 |
| commit | db0ba484ab756d543111acfb91419bee47793b79 (patch) | |
| tree | f9257372a78dc05c1974660e8dbb0e8fc3cc9251 /mm/vmalloc.c | |
| parent | 0e116b700531318237a69ad2d0374b22d155c229 (diff) | |
mm/vmalloc.c: add a schedule point to vmalloc()
It is not uncommon on busy servers to get stuck hundred of ms in
vmalloc() calls (like file descriptor expansions).
Add a cond_resched() to __vmalloc_area_node() to be gentle to
other tasks.
[akpm@linux-foundation.org: only do it for __GFP_WAIT, per David]
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Hugh Dickins <hughd@google.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Change-Id: Ia77a022dc0ab628038ad6cff9fc555f369e44064
(cherry picked from commit 6d99b20b413075cc1c8babb68fa3f33cf5f7cb2e)
Diffstat (limited to 'mm/vmalloc.c')
| -rw-r--r-- | mm/vmalloc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 3a5af8024..2b8159f56 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -1637,6 +1637,8 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask, goto fail; } area->pages[i] = page; + if (gfp_mask & __GFP_WAIT) + cond_resched(); } if (map_vm_area(area, prot, &pages)) |