ceph: move sb->wb_pagevec_pool to be a global mempool

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When doing some testing recently, I hit some page allocation failures
on mount, when creating the wb_pagevec_pool for the mount. That
requires 128k (32 contiguous pages), and after thrashing the memory
during an xfstests run, sometimes that would fail.

128k for each mount seems like a lot to hold in reserve for a rainy
day, so let's change this to a global mempool that gets allocated
when the module is plugged in.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

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Jeff Layton 2020-07-30 11:03:55 -04:00 • committed by Ilya Dryomov

parent b748fc7a87

commit a0102bda5b

4 changed files with 20 additions and 28 deletions

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23

fs/ceph/addr.c

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22

fs/ceph/super.c

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2

fs/ceph/super.h

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1

include/linux/ceph/libceph.h

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