The quilt patch titled
Subject: zram: add recompress flag to read_block_state()
has been removed from the -mm tree. Its filename was
zram-add-recompress-flag-to-read_block_state.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Subject: zram: add recompress flag to read_block_state()
Date: Wed, 9 Nov 2022 20:50:39 +0900
Add a new flag to zram block state that shows if the page was recompressed
(using alternative compression algorithm).
Link: https://lkml.kernel.org/r/20221109115047.2921851-6-senozhatsky@xxxxxxxxxxxx
Signed-off-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Alexey Romanov <avromanov@xxxxxxxxxxxxxx>
Cc: Nhat Pham <nphamcs@xxxxxxxxx>
Cc: Nitin Gupta <ngupta@xxxxxxxxxx>
Cc: Suleiman Souhlal <suleiman@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/admin-guide/blockdev/zram.rst | 9 ++++++---
drivers/block/zram/zram_drv.c | 5 +++--
2 files changed, 9 insertions(+), 5 deletions(-)
--- a/Documentation/admin-guide/blockdev/zram.rst~zram-add-recompress-flag-to-read_block_state
+++ a/Documentation/admin-guide/blockdev/zram.rst
@@ -411,9 +411,10 @@ pages of the process with*pagemap.
If you enable the feature, you could see block state via
/sys/kernel/debug/zram/zram0/block_state". The output is as follows::
- 300 75.033841 .wh.
- 301 63.806904 s...
- 302 63.806919 ..hi
+ 300 75.033841 .wh..
+ 301 63.806904 s....
+ 302 63.806919 ..hi.
+ 303 62.801919 ....r
First column
zram's block index.
@@ -430,6 +431,8 @@ Third column
huge page
i:
idle page
+ r:
+ recompressed page (secondary compression algorithm)
First line of above example says 300th block is accessed at 75.033841sec
and the block's state is huge so it is written back to the backing
--- a/drivers/block/zram/zram_drv.c~zram-add-recompress-flag-to-read_block_state
+++ a/drivers/block/zram/zram_drv.c
@@ -936,13 +936,14 @@ static ssize_t read_block_state(struct f
ts = ktime_to_timespec64(zram->table[index].ac_time);
copied = snprintf(kbuf + written, count,
- "%12zd %12lld.%06lu %c%c%c%c\n",
+ "%12zd %12lld.%06lu %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_test_flag(zram, index, ZRAM_IDLE) ? 'i' : '.',
+ zram_get_priority(zram, index) ? 'r' : '.');
if (count <= copied) {
zram_slot_unlock(zram, index);
_
Patches currently in -mm which might be from senozhatsky@xxxxxxxxxxxx are
