diff options
| author | Coly Li <colyli@suse.de> | 2020-07-25 20:00:16 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-07-25 07:38:19 -0600 |
| commit | 5fe48867856367142d91a82f2cbf7a57a24cbb70 (patch) | |
| tree | fe29ee254c2dedde0d744720609ca3753c041179 /drivers/md/bcache/super.c | |
| parent | 6acd193b2654a9ccdeb18a51f1348c17b97e1d78 (diff) | |
bcache: allocate meta data pages as compound pages
There are some meta data of bcache are allocated by multiple pages,
and they are used as bio bv_page for I/Os to the cache device. for
example cache_set->uuids, cache->disk_buckets, journal_write->data,
bset_tree->data.
For such meta data memory, all the allocated pages should be treated
as a single memory block. Then the memory management and underlying I/O
code can treat them more clearly.
This patch adds __GFP_COMP flag to all the location allocating >0 order
pages for the above mentioned meta data. Then their pages are treated
as compound pages now.
Signed-off-by: Coly Li <colyli@suse.de>
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/bcache/super.c')
| -rw-r--r-- | drivers/md/bcache/super.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index fb54a59ffe12..4a77bfd4009f 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -1784,7 +1784,7 @@ void bch_cache_set_unregister(struct cache_set *c) } #define alloc_bucket_pages(gfp, c) \ - ((void *) __get_free_pages(__GFP_ZERO|gfp, ilog2(bucket_pages(c)))) + ((void *) __get_free_pages(__GFP_ZERO|__GFP_COMP|gfp, ilog2(bucket_pages(c)))) struct cache_set *bch_cache_set_alloc(struct cache_sb *sb) { |