kernel/linux.git/drivers/block/zram/Kconfig, branch linux-7.0.y

zram: ZRAM_DEF_COMP should depend on ZRAM

2024-11-12T01:22:27+00:00

When Compressed RAM block device support is disabled, the CONFIG_ZRAM_DEF_COMP symbol still ends up in the generated config file: CONFIG_ZRAM_DEF_COMP="unset-value" While this causes no real harm, avoid polluting the config file by adding a dependency on ZRAM. Link: https://lkml.kernel.org/r/64e05bad68a9bd5cc322efd114a04d25de525940.1730807319.git.geert@linux-m68k.org Fixes: 917a59e81c34 ("zram: introduce custom comp backends API") Signed-off-by: Geert Uytterhoeven Reviewed-by: Sergey Senozhatsky Cc: Jens Axboe Cc: Minchan Kim Signed-off-by: Andrew Morton

zram: check that backends array has at least one backend

2024-09-09T23:39:09+00:00

Make sure that backends array has anything apart from the sentinel NULL value. We also select LZO_BACKEND if none backends were selected. Link: https://lkml.kernel.org/r/20240902105656.1383858-13-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky Cc: Minchan Kim Cc: Nick Terrell Signed-off-by: Andrew Morton

zram: add 842 compression backend support

2024-09-09T23:39:08+00:00

Add s/w 842 compression support. Link: https://lkml.kernel.org/r/20240902105656.1383858-12-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky Cc: Minchan Kim Cc: Nick Terrell Signed-off-by: Andrew Morton

zram: add zlib compression backend support

2024-09-09T23:39:08+00:00

Add s/w zlib (inflate/deflate) compression. Link: https://lkml.kernel.org/r/20240902105656.1383858-11-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky Cc: Minchan Kim Cc: Nick Terrell Signed-off-by: Andrew Morton

zram: add zstd compression backend support

2024-09-09T23:39:08+00:00

Add s/w zstd compression. Link: https://lkml.kernel.org/r/20240902105656.1383858-9-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky Cc: Minchan Kim Cc: Nick Terrell Signed-off-by: Andrew Morton

zram: add lz4hc compression backend support

2024-09-09T23:39:07+00:00

Add s/w lz4hc compression support. Link: https://lkml.kernel.org/r/20240902105656.1383858-8-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky Cc: Minchan Kim Cc: Nick Terrell Signed-off-by: Andrew Morton

zram: add lz4 compression backend support

2024-09-09T23:39:07+00:00

Add s/w lz4 compression support. Link: https://lkml.kernel.org/r/20240902105656.1383858-7-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky Cc: Minchan Kim Cc: Nick Terrell Signed-off-by: Andrew Morton

zram: add lzo and lzorle compression backends support

2024-09-09T23:39:07+00:00

Add s/w lzo/lzorle compression support. Link: https://lkml.kernel.org/r/20240902105656.1383858-6-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky Cc: Minchan Kim Cc: Nick Terrell Signed-off-by: Andrew Morton

zram: introduce custom comp backends API

2024-09-09T23:39:07+00:00

Moving to custom backends implementation gives us ability to have our own minimalistic and extendable API, and algorithms tunings becomes possible. The list of compression backends is empty at this point, we will add backends in the followup patches. Link: https://lkml.kernel.org/r/20240902105656.1383858-5-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky Cc: Minchan Kim Cc: Nick Terrell Signed-off-by: Andrew Morton

zsmalloc: use all available 24 bits of page_type

2024-09-04T04:15:43+00:00

Now that we have an extra 8 bits, we don't need to limit ourselves to supporting a 64KiB page size. I'm sure both Hexagon users are grateful, but it does reduce complexity a little. We can also remove reset_first_obj_offset() as calling __ClearPageZsmalloc() will now reset all 32 bits of page_type. Link: https://lkml.kernel.org/r/20240821173914.2270383-5-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Acked-by: David Hildenbrand Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com> Cc: Kent Overstreet Signed-off-by: Andrew Morton