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-rw-r--r--mm/page_alloc.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 987225b..b37dc0f 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -895,6 +895,7 @@ zone_reclaim_retry:
if (((p->flags & PF_MEMALLOC) || unlikely(test_thread_flag(TIF_MEMDIE)))
&& !in_interrupt()) {
if (!(gfp_mask & __GFP_NOMEMALLOC)) {
+nofail_alloc:
/* go through the zonelist yet again, ignoring mins */
for (i = 0; (z = zones[i]) != NULL; i++) {
if (!cpuset_zone_allowed(z, gfp_mask))
@@ -903,6 +904,10 @@ zone_reclaim_retry:
if (page)
goto got_pg;
}
+ if (gfp_mask & __GFP_NOFAIL) {
+ blk_congestion_wait(WRITE, HZ/50);
+ goto nofail_alloc;
+ }
}
goto nopage;
}
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