The quilt patch titled
Subject: zram: clarify writeback_store() comment
has been removed from the -mm tree. Its filename was
zram-clarify-writeback_store-comment.patch
This patch was dropped because an updated version will be merged
------------------------------------------------------
From: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Subject: zram: clarify writeback_store() comment
Date: Tue, 18 Oct 2022 13:55:32 +0900
Re-phrase writeback BIO error comment.
Link: https://lkml.kernel.org/r/20221018045533.2396670-9-senozhatsky@xxxxxxxxxxxx
Signed-off-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Reported-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Nitin Gupta <ngupta@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/block/zram/zram_drv.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/block/zram/zram_drv.c~zram-clarify-writeback_store-comment
+++ a/drivers/block/zram/zram_drv.c
@@ -755,8 +755,12 @@ static ssize_t writeback_store(struct de
zram_clear_flag(zram, index, ZRAM_IDLE);
zram_slot_unlock(zram, index);
/*
- * Return last IO error unless every IO were
- * not suceeded.
+ * BIO errors are not fatal, we continue and simply
+ * attempt to writeback the remaining objects (pages).
+ * At the same time we need to signal user-space that
+ * some writes (at least one, but also could be all of
+ * them) were not successful and we do so by returning
+ * the most recent BIO error.
*/
ret = err;
continue;
_
Patches currently in -mm which might be from senozhatsky@xxxxxxxxxxxx are
zram-use-is_err_value-to-check-for-zs_malloc-errors.patch
zsmalloc-turn-zspage-order-into-runtime-variable.patch
zsmalloc-move-away-from-page-order-defines.patch
zsmalloc-make-huge-class-watermark-zs_pool-member.patch
zram-huge-size-watermark-cannot-be-global.patch
zsmalloc-pass-limit-on-pages-per-zspage-to-zs_create_pool.patch
zram-add-pages_per_pool_page-device-attribute.patch
documentation-document-zram-pages_per_pool_page-attribute.patch
zsmalloc-break-out-of-loop-when-found-perfect-zspage-order.patch
