Merge tag 'block-6.5-2023-08-11' of git://git.kernel.dk/linux

Pull block fixes from Jens Axboe:

 - NVMe pull request via Keith:
      - Fixes for request_queue state (Ming)
      - Another uuid quirk (August)

 - RCU poll fix for NVMe (Ming)

 - Fix for an IO stall with polled IO (me)

 - Fix for blk-iocost stats enable/disable accounting (Chengming)

 - Regression fix for large pages for zram (Christoph)

* tag 'block-6.5-2023-08-11' of git://git.kernel.dk/linux:
  nvme: core: don't hold rcu read lock in nvme_ns_chr_uring_cmd_iopoll
  blk-iocost: fix queue stats accounting
  block: don't make REQ_POLLED imply REQ_NOWAIT
  block: get rid of unused plug->nowait flag
  zram: take device and not only bvec offset into account
  nvme-pci: add NVME_QUIRK_BOGUS_NID for Samsung PM9B1 256G and 512G
  nvme-rdma: fix potential unbalanced freeze & unfreeze
  nvme-tcp: fix potential unbalanced freeze & unfreeze
  nvme: fix possible hang when removing a controller during error recovery

1 files changed, 20 insertions, 12 deletions

diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 5676e6dd5b16..06673c6ca255 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1870,15 +1870,16 @@ static void zram_bio_discard(struct zram *zram, struct bio *bio)
 
 static void zram_bio_read(struct zram *zram, struct bio *bio)
 {
-	struct bvec_iter iter;
-	struct bio_vec bv;
-	unsigned long start_time;
+	unsigned long start_time = bio_start_io_acct(bio);
+	struct bvec_iter iter = bio->bi_iter;
 
-	start_time = bio_start_io_acct(bio);
-	bio_for_each_segment(bv, bio, iter) {
+	do {
 		u32 index = iter.bi_sector >> SECTORS_PER_PAGE_SHIFT;
 		u32 offset = (iter.bi_sector & (SECTORS_PER_PAGE - 1)) <<
 				SECTOR_SHIFT;
+		struct bio_vec bv = bio_iter_iovec(bio, iter);
+
+		bv.bv_len = min_t(u32, bv.bv_len, PAGE_SIZE - offset);
 
 		if (zram_bvec_read(zram, &bv, index, offset, bio) < 0) {
 			atomic64_inc(&zram->stats.failed_reads);
@@ -1890,22 +1891,26 @@ static void zram_bio_read(struct zram *zram, struct bio *bio)
 		zram_slot_lock(zram, index);
 		zram_accessed(zram, index);
 		zram_slot_unlock(zram, index);
-	}
+
+		bio_advance_iter_single(bio, &iter, bv.bv_len);
+	} while (iter.bi_size);
+
 	bio_end_io_acct(bio, start_time);
 	bio_endio(bio);
 }
 
 static void zram_bio_write(struct zram *zram, struct bio *bio)
 {
-	struct bvec_iter iter;
-	struct bio_vec bv;
-	unsigned long start_time;
+	unsigned long start_time = bio_start_io_acct(bio);
+	struct bvec_iter iter = bio->bi_iter;
 
-	start_time = bio_start_io_acct(bio);
-	bio_for_each_segment(bv, bio, iter) {
+	do {
 		u32 index = iter.bi_sector >> SECTORS_PER_PAGE_SHIFT;
 		u32 offset = (iter.bi_sector & (SECTORS_PER_PAGE - 1)) <<
 				SECTOR_SHIFT;
+		struct bio_vec bv = bio_iter_iovec(bio, iter);
+
+		bv.bv_len = min_t(u32, bv.bv_len, PAGE_SIZE - offset);
 
 		if (zram_bvec_write(zram, &bv, index, offset, bio) < 0) {
 			atomic64_inc(&zram->stats.failed_writes);
@@ -1916,7 +1921,10 @@ static void zram_bio_write(struct zram *zram, struct bio *bio)
 		zram_slot_lock(zram, index);
 		zram_accessed(zram, index);
 		zram_slot_unlock(zram, index);
-	}
+
+		bio_advance_iter_single(bio, &iter, bv.bv_len);
+	} while (iter.bi_size);
+
 	bio_end_io_acct(bio, start_time);
 	bio_endio(bio);
 }