Author: mav
Date: Sun Oct 11 08:28:49 2015
New Revision: 289136
URL: https://svnweb.freebsd.org/changeset/base/289136
Log:
Remove lock upgrade attempt from ctl_be_block_open_file().
I am not sure what for it was done. Now open routine should automatically
fall back to read-only if open for writing is impossible. In such case
attempt to upgrade to write sounds strange.
MFC after: 1 week
Modified:
head/sys/cam/ctl/ctl_backend_block.c
Modified: head/sys/cam/ctl/ctl_backend_block.c
==============================================================================
--- head/sys/cam/ctl/ctl_backend_block.c Sun Oct 11 08:28:36 2015
(r289135)
+++ head/sys/cam/ctl/ctl_backend_block.c Sun Oct 11 08:28:49 2015
(r289136)
@@ -1840,21 +1840,6 @@ ctl_be_block_open_file(struct ctl_be_blo
return (error);
}
- /*
- * Verify that we have the ability to upgrade to exclusive
- * access on this file so we can trap errors at open instead
- * of reporting them during first access.
- */
- if (VOP_ISLOCKED(be_lun->vn) != LK_EXCLUSIVE) {
- vn_lock(be_lun->vn, LK_UPGRADE | LK_RETRY);
- if (be_lun->vn->v_iflag & VI_DOOMED) {
- error = EBADF;
- snprintf(req->error_str, sizeof(req->error_str),
- "error locking file %s", be_lun->dev_path);
- return (error);
- }
- }
-
file_data->cred = crhold(curthread->td_ucred);
if (params->lun_size_bytes != 0)
be_lun->size_bytes = params->lun_size_bytes;
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