summaryrefslogtreecommitdiffstats
path: root/module/zfs/vdev_disk.c
diff options
context:
space:
mode:
Diffstat (limited to 'module/zfs/vdev_disk.c')
-rw-r--r--module/zfs/vdev_disk.c17
1 files changed, 10 insertions, 7 deletions
diff --git a/module/zfs/vdev_disk.c b/module/zfs/vdev_disk.c
index 5fb218f73..ebf0e8bfe 100644
--- a/module/zfs/vdev_disk.c
+++ b/module/zfs/vdev_disk.c
@@ -42,9 +42,9 @@ static void *zfs_vdev_holder = VDEV_HOLDER;
*/
typedef struct dio_request {
struct completion dr_comp; /* Completion for sync IO */
- atomic_t dr_ref; /* References */
zio_t *dr_zio; /* Parent ZIO */
- int dr_rw; /* Read/Write */
+ atomic_t dr_ref; /* References */
+ int dr_wait; /* Wait for IO */
int dr_error; /* Bio error */
int dr_bio_count; /* Count of bio's */
struct bio *dr_bio[0]; /* Attached bio's */
@@ -407,6 +407,7 @@ BIO_END_IO_PROTO(vdev_disk_physio_completion, bio, error)
{
dio_request_t *dr = bio->bi_private;
int rc;
+ int wait;
if (dr->dr_error == 0) {
#ifdef HAVE_1ARG_BIO_END_IO_T
@@ -419,11 +420,12 @@ BIO_END_IO_PROTO(vdev_disk_physio_completion, bio, error)
#endif
}
+ wait = dr->dr_wait;
/* Drop reference aquired by __vdev_disk_physio */
rc = vdev_disk_dio_put(dr);
/* Wake up synchronous waiter this is the last outstanding bio */
- if (rc == 1)
+ if (wait && rc == 1)
complete(&dr->dr_comp);
}
@@ -496,7 +498,7 @@ __vdev_disk_physio(struct block_device *bdev, zio_t *zio, caddr_t kbuf_ptr,
dio_request_t *dr;
caddr_t bio_ptr;
uint64_t bio_offset;
- int bio_size, bio_count = 16;
+ int rw, bio_size, bio_count = 16;
int i = 0, error = 0;
ASSERT3U(kbuf_offset + kbuf_size, <=, bdev->bd_inode->i_size);
@@ -509,8 +511,9 @@ retry:
if (zio && !(zio->io_flags & (ZIO_FLAG_IO_RETRY | ZIO_FLAG_TRYHARD)))
bio_set_flags_failfast(bdev, &flags);
+ rw = flags;
dr->dr_zio = zio;
- dr->dr_rw = flags;
+ dr->dr_wait = wait;
/*
* When the IO size exceeds the maximum bio size for the request
@@ -552,7 +555,7 @@ retry:
dr->dr_bio[i]->bi_bdev = bdev;
BIO_BI_SECTOR(dr->dr_bio[i]) = bio_offset >> 9;
- dr->dr_bio[i]->bi_rw = dr->dr_rw;
+ dr->dr_bio[i]->bi_rw = rw;
dr->dr_bio[i]->bi_end_io = vdev_disk_physio_completion;
dr->dr_bio[i]->bi_private = dr;
@@ -572,7 +575,7 @@ retry:
/* Submit all bio's associated with this dio */
for (i = 0; i < dr->dr_bio_count; i++)
if (dr->dr_bio[i])
- vdev_submit_bio(dr->dr_rw, dr->dr_bio[i]);
+ vdev_submit_bio(rw, dr->dr_bio[i]);
/*
* On synchronous blocking requests we wait for all bio the completion