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author | Jakub Kicinski <kuba@kernel.org> | 2021-12-17 03:13:19 +0300 |
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committer | Jakub Kicinski <kuba@kernel.org> | 2021-12-17 03:13:19 +0300 |
commit | 7cd2802d7496c1fc76f42dc045b48cc16d11df39 (patch) | |
tree | 41c33f5944bbc686a489801762eb126e07049b81 /include/uapi/linux/resource.h | |
parent | 0f473bb6ed2d0b8533a079ee133f625f83de5315 (diff) | |
parent | 6441998e2e37131b0a4c310af9156d79d3351c16 (diff) | |
download | linux-7cd2802d7496c1fc76f42dc045b48cc16d11df39.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/uapi/linux/resource.h')
-rw-r--r-- | include/uapi/linux/resource.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/include/uapi/linux/resource.h b/include/uapi/linux/resource.h index 74ef57b38f9f..ac5d6a3031db 100644 --- a/include/uapi/linux/resource.h +++ b/include/uapi/linux/resource.h @@ -66,10 +66,17 @@ struct rlimit64 { #define _STK_LIM (8*1024*1024) /* - * GPG2 wants 64kB of mlocked memory, to make sure pass phrases - * and other sensitive information are never written to disk. + * Limit the amount of locked memory by some sane default: + * root can always increase this limit if needed. + * + * The main use-cases are (1) preventing sensitive memory + * from being swapped; (2) real-time operations; (3) via + * IOURING_REGISTER_BUFFERS. + * + * The first two don't need much. The latter will take as + * much as it can get. 8MB is a reasonably sane default. */ -#define MLOCK_LIMIT ((PAGE_SIZE > 64*1024) ? PAGE_SIZE : 64*1024) +#define MLOCK_LIMIT (8*1024*1024) /* * Due to binary compatibility, the actual resource numbers |