diff options
| author | Coly Li <colyli@suse.de> | 2020-07-25 15:00:16 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-07-25 16:38:19 +0300 |
| commit | 5fe48867856367142d91a82f2cbf7a57a24cbb70 (patch) | |
| tree | fe29ee254c2dedde0d744720609ca3753c041179 /drivers/md/bcache/journal.c | |
| parent | 6acd193b2654a9ccdeb18a51f1348c17b97e1d78 (diff) | |
| download | linux-5fe48867856367142d91a82f2cbf7a57a24cbb70.tar.xz | |
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/journal.c')
| -rw-r--r-- | drivers/md/bcache/journal.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c index 90aac4e2333f..d8586b6ccb76 100644 --- a/drivers/md/bcache/journal.c +++ b/drivers/md/bcache/journal.c @@ -999,8 +999,8 @@ int bch_journal_alloc(struct cache_set *c) j->w[1].c = c; if (!(init_fifo(&j->pin, JOURNAL_PIN, GFP_KERNEL)) || - !(j->w[0].data = (void *) __get_free_pages(GFP_KERNEL, JSET_BITS)) || - !(j->w[1].data = (void *) __get_free_pages(GFP_KERNEL, JSET_BITS))) + !(j->w[0].data = (void *) __get_free_pages(GFP_KERNEL|__GFP_COMP, JSET_BITS)) || + !(j->w[1].data = (void *) __get_free_pages(GFP_KERNEL|__GFP_COMP, JSET_BITS))) return -ENOMEM; return 0; |