The quilt patch titled
Subject: zram: return errors from read_from_bdev_sync
has been removed from the -mm tree. Its filename was
zram-return-errors-from-read_from_bdev_sync.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: Christoph Hellwig <hch@xxxxxx>
Subject: zram: return errors from read_from_bdev_sync
Date: Tue, 11 Apr 2023 19:14:59 +0200
Propagate read errors to the caller instead of dropping them on the floor,
and stop returning the somewhat dangerous 1 on success from
read_from_bdev*.
Link: https://lkml.kernel.org/r/20230411171459.567614-18-hch@xxxxxx
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/block/zram/zram_drv.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/block/zram/zram_drv.c~zram-return-errors-from-read_from_bdev_sync
+++ a/drivers/block/zram/zram_drv.c
@@ -770,6 +770,7 @@ struct zram_work {
struct zram *zram;
unsigned long entry;
struct page *page;
+ int error;
};
static void zram_sync_read(struct work_struct *work)
@@ -781,7 +782,7 @@ static void zram_sync_read(struct work_s
bio_init(&bio, zw->zram->bdev, &bv, 1, REQ_OP_READ);
bio.bi_iter.bi_sector = zw->entry * (PAGE_SIZE >> 9);
__bio_add_page(&bio, zw->page, PAGE_SIZE, 0);
- submit_bio_wait(&bio);
+ zw->error = submit_bio_wait(&bio);
}
/*
@@ -803,7 +804,7 @@ static int read_from_bdev_sync(struct zr
flush_work(&work.work);
destroy_work_on_stack(&work.work);
- return 1;
+ return work.error;
}
static int read_from_bdev(struct zram *zram, struct page *page,
@@ -816,7 +817,7 @@ static int read_from_bdev(struct zram *z
return read_from_bdev_sync(zram, page, entry);
}
read_from_bdev_async(zram, page, entry, parent);
- return 1;
+ return 0;
}
#else
static inline void reset_bdev(struct zram *zram) {};
_
Patches currently in -mm which might be from hch@xxxxxx are
