[Devel] [PATCH VZ9 0/2] dm-qcow2: add a memory pool for big buffer allocations

[Pavel Tikhomirov]

Oh, from the second glance, it looks like I can't use kvmalloc for the 
pool allocation as mempool_alloc tries to call mempool_t->alloc directly 
first, and only then fallbacks to elements from pool, but kvmalloc is 
not good for GFP_NOIO allocations...

Please disregard this series, I will try to come up with something 
better. Probably I just need to switch to kmalloc if see GFP_NOIO in flags.

On 11/18/24 13:54, Pavel Tikhomirov wrote:
> note: not yet fully tested (waiting for reproduce)
> 
> https://virtuozzo.atlassian.net/browse/VSTOR-94596
> Signed-off-by: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>
> 
> Pavel Tikhomirov (2):
>    mempool: add kvmalloc/kvfree version
>    dm-qcow2: add memory pool for compression buffers
> 
>   drivers/md/dm-qcow2-map.c    | 18 ++++++++++++++----
>   drivers/md/dm-qcow2-target.c | 18 ++++++++++++++++--
>   include/linux/mempool.h      | 15 +++++++++++++++
>   mm/mempool.c                 | 13 +++++++++++++
>   4 files changed, 58 insertions(+), 6 deletions(-)
> 

-- 
Best regards, Tikhomirov Pavel
Senior Software Developer, Virtuozzo.