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author | Coly Li <colyli@suse.de> | 2020-07-25 15:00:16 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-21 12:05:32 +0300 |
commit | d6e2394ce6c9554a78a88fab2a779e3168088a47 (patch) | |
tree | 7f9b8de23027d39a5f0721839f4133e6648b76d2 /drivers/hwspinlock | |
parent | 566cba3c7d1fe14fdc9c43931035e9ae4320f973 (diff) | |
download | linux-d6e2394ce6c9554a78a88fab2a779e3168088a47.tar.xz |
bcache: allocate meta data pages as compound pages
commit 5fe48867856367142d91a82f2cbf7a57a24cbb70 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwspinlock')
0 files changed, 0 insertions, 0 deletions