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mm/backing-dev.c: use might_alloc()

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Now that my little helper has landed, use it more.  On top of the existing
check this also uses lockdep through the fs_reclaim annotations.

[akpm@linux-foundation.org: include linux/sched/mm.h]

Link: https://lkml.kernel.org/r/20210113135009.3606813-2-daniel.vetter@ffwll.ch
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Daniel Vetter 2021-02-25 17:18:45 -08:00 committed by Linus Torvalds
parent 0f2f89b6de
commit c1ca59a1f2
1 changed files with 2 additions and 1 deletions
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3
mm/backing-dev.c
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@ -8,6 +8,7 @@
#include <linux/fs.h>
#include <linux/pagemap.h>
#include <linux/mm.h>
#include <linux/sched/mm.h>
#include <linux/sched.h>
#include <linux/module.h>
#include <linux/writeback.h>
@ -578,7 +579,7 @@ struct bdi_writeback *wb_get_create(struct backing_dev_info *bdi,
{
struct bdi_writeback *wb;
might_sleep_if(gfpflags_allow_blocking(gfp));
might_alloc(gfp);
if (!memcg_css->parent)
return &bdi->wb;