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dm integrity: reduce vmalloc space footprint on 32-bit architectures 

[ Upstream commit 6d50eb4725 ]

It was reported that dm-integrity runs out of vmalloc space on 32-bit
architectures. On x86, there is only 128MiB vmalloc space and dm-integrity
consumes it quickly because it has a 64MiB journal and 8MiB recalculate
buffer.

Fix this by reducing the size of the journal to 4MiB and the size of
the recalculate buffer to 1MiB, so that multiple dm-integrity devices
can be created and activated on 32-bit architectures.

Cc: stable@vger.kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Mikulas Patocka 2023-06-26 16:44:34 +02:00 committed by Greg Kroah-Hartman
parent 15569a0939
commit 52f186f7db
1 changed files with 2 additions and 2 deletions
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4
drivers/md/dm-integrity.c
View File

@ -29,11 +29,11 @@
#define DEFAULT_BUFFER_SECTORS 128
#define DEFAULT_JOURNAL_WATERMARK 50
#define DEFAULT_SYNC_MSEC 10000
#define DEFAULT_MAX_JOURNAL_SECTORS 131072
#define DEFAULT_MAX_JOURNAL_SECTORS (IS_ENABLED(CONFIG_64BIT) ? 131072 : 8192)
#define MIN_LOG2_INTERLEAVE_SECTORS 3
#define MAX_LOG2_INTERLEAVE_SECTORS 31
#define METADATA_WORKQUEUE_MAX_ACTIVE 16
#define RECALC_SECTORS 32768
#define RECALC_SECTORS (IS_ENABLED(CONFIG_64BIT) ? 32768 : 2048)
#define RECALC_WRITE_SUPER 16
/*