Konstantin Belousov 7818e0a545 Save previous content of the td_fpop before storing the current ... filedescriptor into it. Make sure that td_fpop is NULL when calling d_mmap from dev_pager_getpages(). Change guards against td_fpop field being non-NULL with private state for another device, and against sudden clearing the td_fpop. This could occur when either a driver method calls another driver through the filedescriptor operation, or a page fault happen while driver is writing to a memory backed by another driver. Noted by: rwatson Tested by: rnoland MFC after: 3 days		2008-09-26 14:50:49 +00:00
..
devfs.h	Properly lock the vnode around vgone() calls.	2006-10-18 11:17:14 +00:00
devfs_devs.c	Already initialize the vfs timestamps inside the cdev upon allocation.	2008-09-21 14:02:43 +00:00
devfs_int.h	Struct cdev is always the member of the struct cdev_priv. When devfs	2008-06-16 17:34:59 +00:00
devfs_rule.c	Get pointer to devfs_ruleset struct after garbage collection has been	2008-06-22 14:34:38 +00:00
devfs_vfsops.c	VOP_LOCK1() (and so VOP_LOCK()) and VOP_UNLOCK() are only used in	2008-01-13 14:44:15 +00:00
devfs_vnops.c	Save previous content of the td_fpop before storing the current	2008-09-26 14:50:49 +00:00