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bcachefs: Check gfp_flags correctly in bch2_btree_cache_scan()

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bch2_btree_node_mem_alloc() uses memalloc_nofs_save()/GFP_NOFS, but
GFP_NOFS does include __GFP_IO - oops. We used to use GFP_NOIO, but as
we're a filesystem now GFP_NOFS makes more sense now and is looser.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2020-06-05 09:01:23 -04:00 committed by Kent Overstreet
parent 8804ef1f28
commit 8c9eef95cd
1 changed files with 1 additions and 1 deletions
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2
fs/bcachefs/btree_cache.c
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@ -242,7 +242,7 @@ static unsigned long bch2_btree_cache_scan(struct shrinker *shrink,
return SHRINK_STOP;
/* Return -1 if we can't do anything right now */
if (sc->gfp_mask & __GFP_IO)
if (sc->gfp_mask & __GFP_FS)
mutex_lock(&bc->lock);
else if (!mutex_trylock(&bc->lock))
return -1;