]> www.infradead.org Git - users/jedix/linux-maple.git/commit
zram: don't retry compress incompressible page
authorAlexey Romanov <avromanov@sberdevices.ru>
Wed, 10 Aug 2022 11:28:57 +0000 (14:28 +0300)
committerAndrew Morton <akpm@linux-foundation.org>
Mon, 22 Aug 2022 22:58:08 +0000 (15:58 -0700)
commit138a7ec49ae8b8e6b74784341760d509d25873f1
treeffa0a494f5b67b107417c8cb45b446d6abdf50aa
parent992ca2848949c7b9c466f89b1e7626291584f629
zram: don't retry compress incompressible page

It doesn't make sense for us to retry to compress an uncompressible page
(comp_len == PAGE_SIZE) in zsmalloc slowpath, because we will be storing
it uncompressed anyway.  We can avoid wasting time on another compression
attempt.  It is enough to take lock (zcomp_stream_get) and execute the
code below.

Link: https://lkml.kernel.org/r/20220810112857.90278-1-avromanov@sberdevices.ru
Signed-off-by: Alexey Romanov <avromanov@sberdevices.ru>
Signed-off-by: Dmitry Rokosov <ddrokosov@sberdevices.ru>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
drivers/block/zram/zram_drv.c