afs: Make vnode->cb_interest RCU safe
authorDavid Howells <dhowells@redhat.com>
Mon, 13 May 2019 15:14:32 +0000 (16:14 +0100)
committerDavid Howells <dhowells@redhat.com>
Thu, 16 May 2019 21:23:21 +0000 (22:23 +0100)
commitf642404a0436a50912c218009ccc7856d48d784c
treeddf39d1741f07866333581e66f1abc0e6709d453
parentc925bd0ac4741badb567f594c41c8cba5e9e9732
afs: Make vnode->cb_interest RCU safe

Use RCU-based freeing for afs_cb_interest struct objects and use RCU on
vnode->cb_interest.  Use that change to allow afs_check_validity() to use
read_seqbegin_or_lock() instead of read_seqlock_excl().

This also requires the caller of afs_check_validity() to hold the RCU read
lock across the call.

Signed-off-by: David Howells <dhowells@redhat.com>
fs/afs/callback.c
fs/afs/dir.c
fs/afs/inode.c
fs/afs/internal.h
fs/afs/rotate.c
fs/afs/security.c
fs/afs/super.c