| Message ID | 20240625055238.7934-1-hch@lst.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | xen-blkfront: fix sector_size propagation to the block layer | expand |
On Tue, Jun 25, 2024 at 07:52:38AM +0200, Christoph Hellwig wrote: > Ensure that info->sector_size and info->physical_sector_size are set > before the call to blkif_set_queue_limits by doing away with the > local variables and arguments that propagate them. > > Thanks to Marek Marczykowski-Górecki and Jürgen Groß for root causing > the issue. > > Fixes: ba3f67c11638 ("xen-blkfront: atomically update queue limits") > Reported-by: Rusty Bird <rustybird@net-c.com> > Signed-off-by: Christoph Hellwig <hch@lst.de> Thanks for debugging this. Reviewed-by: Roger Pau Monné <roger.pau@citrix.com> Roger.
On 25.06.24 07:52, Christoph Hellwig wrote: > Ensure that info->sector_size and info->physical_sector_size are set > before the call to blkif_set_queue_limits by doing away with the > local variables and arguments that propagate them. > > Thanks to Marek Marczykowski-Górecki and Jürgen Groß for root causing > the issue. > > Fixes: ba3f67c11638 ("xen-blkfront: atomically update queue limits") > Reported-by: Rusty Bird <rustybird@net-c.com> > Signed-off-by: Christoph Hellwig <hch@lst.de> I guess this should go through the block tree? Juergen
On Tue, 25 Jun 2024 07:52:38 +0200, Christoph Hellwig wrote: > Ensure that info->sector_size and info->physical_sector_size are set > before the call to blkif_set_queue_limits by doing away with the > local variables and arguments that propagate them. > > Thanks to Marek Marczykowski-Górecki and Jürgen Groß for root causing > the issue. > > [...] Applied, thanks! [1/1] xen-blkfront: fix sector_size propagation to the block layer commit: 98d34c087249d39838874b83e17671e7d5eb1ca7 Best regards,
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index fa3a2ba525458b..59ce113b882a0e 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -1070,8 +1070,7 @@ static char *encode_disk_name(char *ptr, unsigned int n) } static int xlvbd_alloc_gendisk(blkif_sector_t capacity, - struct blkfront_info *info, u16 sector_size, - unsigned int physical_sector_size) + struct blkfront_info *info) { struct queue_limits lim = {}; struct gendisk *gd; @@ -1165,8 +1164,6 @@ static int xlvbd_alloc_gendisk(blkif_sector_t capacity, info->rq = gd->queue; info->gd = gd; - info->sector_size = sector_size; - info->physical_sector_size = physical_sector_size; xlvbd_flush(info); @@ -2320,8 +2317,6 @@ static void blkfront_gather_backend_features(struct blkfront_info *info) static void blkfront_connect(struct blkfront_info *info) { unsigned long long sectors; - unsigned long sector_size; - unsigned int physical_sector_size; int err, i; struct blkfront_ring_info *rinfo; @@ -2360,7 +2355,7 @@ static void blkfront_connect(struct blkfront_info *info) err = xenbus_gather(XBT_NIL, info->xbdev->otherend, "sectors", "%llu", §ors, "info", "%u", &info->vdisk_info, - "sector-size", "%lu", §or_size, + "sector-size", "%lu", &info->sector_size, NULL); if (err) { xenbus_dev_fatal(info->xbdev, err, @@ -2374,9 +2369,9 @@ static void blkfront_connect(struct blkfront_info *info) * provide this. Assume physical sector size to be the same as * sector_size in that case. */ - physical_sector_size = xenbus_read_unsigned(info->xbdev->otherend, + info->physical_sector_size = xenbus_read_unsigned(info->xbdev->otherend, "physical-sector-size", - sector_size); + info->sector_size); blkfront_gather_backend_features(info); for_each_rinfo(info, rinfo, i) { err = blkfront_setup_indirect(rinfo); @@ -2388,8 +2383,7 @@ static void blkfront_connect(struct blkfront_info *info) } } - err = xlvbd_alloc_gendisk(sectors, info, sector_size, - physical_sector_size); + err = xlvbd_alloc_gendisk(sectors, info); if (err) { xenbus_dev_fatal(info->xbdev, err, "xlvbd_add at %s", info->xbdev->otherend);
Ensure that info->sector_size and info->physical_sector_size are set before the call to blkif_set_queue_limits by doing away with the local variables and arguments that propagate them. Thanks to Marek Marczykowski-Górecki and Jürgen Groß for root causing the issue. Fixes: ba3f67c11638 ("xen-blkfront: atomically update queue limits") Reported-by: Rusty Bird <rustybird@net-c.com> Signed-off-by: Christoph Hellwig <hch@lst.de> --- drivers/block/xen-blkfront.c | 16 +++++----------- 1 file changed, 5 insertions(+), 11 deletions(-)