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authorSergey Senozhatsky <senozhatsky@chromium.org>2022-11-09 20:50:47 +0900
committerAndrew Morton <akpm@linux-foundation.org>2022-11-30 15:58:53 -0800
commit77db7bb56bd711586243924a5582727f7a93fb7f (patch)
tree86935e1ddb11405eecf13b3a2d076f8d85488e08 /drivers/block
parentb46f9ea3cb351587b2cfc68f7211f7a7cc5b6673 (diff)
zram: add incompressible flag to read_block_state()
Add a new flag to zram block state that shows if the page is incompressible: that none of the algorithm (including secondary ones) could compress it. Link: https://lkml.kernel.org/r/20221109115047.2921851-14-senozhatsky@chromium.org Suggested-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Acked-by: Minchan Kim <minchan@kernel.org> Cc: Alexey Romanov <avromanov@sberdevices.ru> Cc: Nhat Pham <nphamcs@gmail.com> Cc: Nitin Gupta <ngupta@vflare.org> Cc: Suleiman Souhlal <suleiman@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/zram/zram_drv.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 25b7ff2b56bf..9d33801e8ba8 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -946,14 +946,16 @@ static ssize_t read_block_state(struct file *file, char __user *buf,
ts = ktime_to_timespec64(zram->table[index].ac_time);
copied = snprintf(kbuf + written, count,
- "%12zd %12lld.%06lu %c%c%c%c%c\n",
+ "%12zd %12lld.%06lu %c%c%c%c%c%c\n",
index, (s64)ts.tv_sec,
ts.tv_nsec / NSEC_PER_USEC,
zram_test_flag(zram, index, ZRAM_SAME) ? 's' : '.',
zram_test_flag(zram, index, ZRAM_WB) ? 'w' : '.',
zram_test_flag(zram, index, ZRAM_HUGE) ? 'h' : '.',
zram_test_flag(zram, index, ZRAM_IDLE) ? 'i' : '.',
- zram_get_priority(zram, index) ? 'r' : '.');
+ zram_get_priority(zram, index) ? 'r' : '.',
+ zram_test_flag(zram, index,
+ ZRAM_INCOMPRESSIBLE) ? 'n' : '.');
if (count <= copied) {
zram_slot_unlock(zram, index);