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-rw-r--r--drivers/block/drbd/drbd_int.h2
-rw-r--r--drivers/block/floppy.c1
-rw-r--r--drivers/block/null_blk/main.c26
-rw-r--r--drivers/block/null_blk/null_blk.h1
-rw-r--r--drivers/block/rsxx/core.c1
-rw-r--r--drivers/block/umem.c5
-rw-r--r--drivers/block/xen-blkback/blkback.c2
-rw-r--r--drivers/block/zram/zram_drv.c17
8 files changed, 40 insertions, 15 deletions
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index 7d9cc433b758..5d9181382ce1 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -1324,7 +1324,7 @@ struct bm_extent {
* A followup commit may allow even bigger BIO sizes,
* once we thought that through. */
#define DRBD_MAX_BIO_SIZE (1U << 20)
-#if DRBD_MAX_BIO_SIZE > (BIO_MAX_PAGES << PAGE_SHIFT)
+#if DRBD_MAX_BIO_SIZE > (BIO_MAX_VECS << PAGE_SHIFT)
#error Architecture not supported: DRBD_MAX_BIO_SIZE > BIO_MAX_SIZE
#endif
#define DRBD_MAX_BIO_SIZE_SAFE (1U << 12) /* Works always = 4k */
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 0b71292d9d5a..4aa9683ee0c1 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -5091,7 +5091,6 @@ module_param(floppy, charp, 0);
module_param(FLOPPY_IRQ, int, 0);
module_param(FLOPPY_DMA, int, 0);
MODULE_AUTHOR("Alain L. Knaff");
-MODULE_SUPPORTED_DEVICE("fd");
MODULE_LICENSE("GPL");
/* This doesn't actually get used other than for module information */
diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c
index d6c821d48090..51bfd7737552 100644
--- a/drivers/block/null_blk/main.c
+++ b/drivers/block/null_blk/main.c
@@ -1369,10 +1369,13 @@ static blk_status_t null_handle_cmd(struct nullb_cmd *cmd, sector_t sector,
}
if (dev->zoned)
- cmd->error = null_process_zoned_cmd(cmd, op,
- sector, nr_sectors);
+ sts = null_process_zoned_cmd(cmd, op, sector, nr_sectors);
else
- cmd->error = null_process_cmd(cmd, op, sector, nr_sectors);
+ sts = null_process_cmd(cmd, op, sector, nr_sectors);
+
+ /* Do not overwrite errors (e.g. timeout errors) */
+ if (cmd->error == BLK_STS_OK)
+ cmd->error = sts;
out:
nullb_complete_cmd(cmd);
@@ -1451,8 +1454,20 @@ static bool should_requeue_request(struct request *rq)
static enum blk_eh_timer_return null_timeout_rq(struct request *rq, bool res)
{
+ struct nullb_cmd *cmd = blk_mq_rq_to_pdu(rq);
+
pr_info("rq %p timed out\n", rq);
- blk_mq_complete_request(rq);
+
+ /*
+ * If the device is marked as blocking (i.e. memory backed or zoned
+ * device), the submission path may be blocked waiting for resources
+ * and cause real timeouts. For these real timeouts, the submission
+ * path will complete the request using blk_mq_complete_request().
+ * Only fake timeouts need to execute blk_mq_complete_request() here.
+ */
+ cmd->error = BLK_STS_TIMEOUT;
+ if (cmd->fake_timeout)
+ blk_mq_complete_request(rq);
return BLK_EH_DONE;
}
@@ -1473,6 +1488,7 @@ static blk_status_t null_queue_rq(struct blk_mq_hw_ctx *hctx,
cmd->rq = bd->rq;
cmd->error = BLK_STS_OK;
cmd->nq = nq;
+ cmd->fake_timeout = should_timeout_request(bd->rq);
blk_mq_start_request(bd->rq);
@@ -1489,7 +1505,7 @@ static blk_status_t null_queue_rq(struct blk_mq_hw_ctx *hctx,
return BLK_STS_OK;
}
}
- if (should_timeout_request(bd->rq))
+ if (cmd->fake_timeout)
return BLK_STS_OK;
return null_handle_cmd(cmd, sector, nr_sectors, req_op(bd->rq));
diff --git a/drivers/block/null_blk/null_blk.h b/drivers/block/null_blk/null_blk.h
index 83504f3cc9d6..4876d5adb12d 100644
--- a/drivers/block/null_blk/null_blk.h
+++ b/drivers/block/null_blk/null_blk.h
@@ -22,6 +22,7 @@ struct nullb_cmd {
blk_status_t error;
struct nullb_queue *nq;
struct hrtimer timer;
+ bool fake_timeout;
};
struct nullb_queue {
diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c
index 5ac1881396af..227e1be4c6f9 100644
--- a/drivers/block/rsxx/core.c
+++ b/drivers/block/rsxx/core.c
@@ -871,6 +871,7 @@ static int rsxx_pci_probe(struct pci_dev *dev,
card->event_wq = create_singlethread_workqueue(DRIVER_NAME"_event");
if (!card->event_wq) {
dev_err(CARD_TO_DEV(card), "Failed card event setup.\n");
+ st = -ENOMEM;
goto failed_event_handler;
}
diff --git a/drivers/block/umem.c b/drivers/block/umem.c
index 982732dbe82e..664280f23bee 100644
--- a/drivers/block/umem.c
+++ b/drivers/block/umem.c
@@ -877,6 +877,7 @@ static int mm_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
if (card->mm_pages[0].desc == NULL ||
card->mm_pages[1].desc == NULL) {
dev_printk(KERN_ERR, &card->dev->dev, "alloc failed\n");
+ ret = -ENOMEM;
goto failed_alloc;
}
reset_page(&card->mm_pages[0]);
@@ -888,8 +889,10 @@ static int mm_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
spin_lock_init(&card->lock);
card->queue = blk_alloc_queue(NUMA_NO_NODE);
- if (!card->queue)
+ if (!card->queue) {
+ ret = -ENOMEM;
goto failed_alloc;
+ }
tasklet_init(&card->tasklet, process_page, (unsigned long)card);
diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
index 1cdf09ff67b6..14e452896d04 100644
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -891,7 +891,7 @@ next:
out:
for (i = last_map; i < num; i++) {
/* Don't zap current batch's valid persistent grants. */
- if(i >= last_map + segs_to_map)
+ if(i >= map_until)
pages[i]->persistent_gnt = NULL;
pages[i]->handle = BLKBACK_INVALID_HANDLE;
}
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index a711a2e2a794..cf8deecc39ef 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -627,7 +627,7 @@ static ssize_t writeback_store(struct device *dev,
struct bio_vec bio_vec;
struct page *page;
ssize_t ret = len;
- int mode;
+ int mode, err;
unsigned long blk_idx = 0;
if (sysfs_streq(buf, "idle"))
@@ -638,8 +638,8 @@ static ssize_t writeback_store(struct device *dev,
if (strncmp(buf, PAGE_WB_SIG, sizeof(PAGE_WB_SIG) - 1))
return -EINVAL;
- ret = kstrtol(buf + sizeof(PAGE_WB_SIG) - 1, 10, &index);
- if (ret || index >= nr_pages)
+ if (kstrtol(buf + sizeof(PAGE_WB_SIG) - 1, 10, &index) ||
+ index >= nr_pages)
return -EINVAL;
nr_pages = 1;
@@ -663,7 +663,7 @@ static ssize_t writeback_store(struct device *dev,
goto release_init_lock;
}
- while (nr_pages--) {
+ for (; nr_pages != 0; index++, nr_pages--) {
struct bio_vec bvec;
bvec.bv_page = page;
@@ -728,12 +728,17 @@ static ssize_t writeback_store(struct device *dev,
* XXX: A single page IO would be inefficient for write
* but it would be not bad as starter.
*/
- ret = submit_bio_wait(&bio);
- if (ret) {
+ err = submit_bio_wait(&bio);
+ if (err) {
zram_slot_lock(zram, index);
zram_clear_flag(zram, index, ZRAM_UNDER_WB);
zram_clear_flag(zram, index, ZRAM_IDLE);
zram_slot_unlock(zram, index);
+ /*
+ * Return last IO error unless every IO were
+ * not suceeded.
+ */
+ ret = err;
continue;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-11 03:40:07 +0300