| commit | d45ac4fa8f277e1ec5acfb67ce5d6406555760cf | |
| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | |
| Mon, 31 Mar 2008 01:03:38 +0000 (31 10:03 +0900) | ||
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | |
| Fri, 18 Apr 2008 16:47:19 +0000 (18 11:47 -0500) | ||
| tree | f620055da979b1af58bfdac16f35f90cd67e6f13 | treesnapshot (tar.gz zip) |
| parent | 0e4ff797d7f2f2bb860b8f31dc5d1f2273b2f05a | commitdiff |
[SCSI] bsg: takes a ref to struct device in fops->open
bsg_register_queue() takes a ref to struct device that a caller
passes. For example, bsg takes a ref to the sdev_gendev for scsi
devices. However, bsg doesn't inrease the refcount in fops->open. So
while an application opens a bsg device, the scsi device that the bsg
device holds can go away (bsg also takes a ref to a queue, but it
doesn't prevent the device from going away).
With this patch, bsg increases the refcount of struct device in
fops->open and decreases it in fops->release.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
bsg_register_queue() takes a ref to struct device that a caller
passes. For example, bsg takes a ref to the sdev_gendev for scsi
devices. However, bsg doesn't inrease the refcount in fops->open. So
while an application opens a bsg device, the scsi device that the bsg
device holds can go away (bsg also takes a ref to a queue, but it
doesn't prevent the device from going away).
With this patch, bsg increases the refcount of struct device in
fops->open and decreases it in fops->release.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| block/bsg.c | diffblobblamehistory |