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authorLinus Torvalds <torvalds@linux-foundation.org>2019-05-17 03:00:13 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-05-17 03:00:13 +0300
commit227747fb9eab37aaeb360aeba795362c01889427 (patch)
tree6bc179332007a270373703c5f04cbc19af242702 /fs/afs/inode.c
parent1d9d7cbf28a1c2f84f2a0224466f8eb5f0a62ace (diff)
parentfd711586bb7d63f257da5eff234e68c446ac35ea (diff)
downloadlinux-227747fb9eab37aaeb360aeba795362c01889427.tar.xz
Merge tag 'afs-fixes-20190516' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull misc AFS fixes from David Howells: "This fixes a set of miscellaneous issues in the afs filesystem, including: - leak of keys on file close. - broken error handling in xattr functions. - missing locking when updating VL server list. - volume location server DNS lookup whereby preloaded cells may not ever get a lookup and regular DNS lookups to maintain server lists consume power unnecessarily. - incorrect error propagation and handling in the fileserver iteration code causes operations to sometimes apparently succeed. - interruption of server record check/update side op during fileserver iteration causes uninterruptible main operations to fail unexpectedly. - callback promise expiry time miscalculation. - over invalidation of the callback promise on directories. - double locking on callback break waking up file locking waiters. - double increment of the vnode callback break counter. Note that it makes some changes outside of the afs code, including: - an extra parameter to dns_query() to allow the dns_resolver key just accessed to be immediately invalidated. AFS is caching the results itself, so the key can be discarded. - an interruptible version of wait_var_event(). - an rxrpc function to allow the maximum lifespan to be set on a call. - a way for an rxrpc call to be marked as non-interruptible" * tag 'afs-fixes-20190516' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: afs: Fix double inc of vnode->cb_break afs: Fix lock-wait/callback-break double locking afs: Don't invalidate callback if AFS_VNODE_DIR_VALID not set afs: Fix calculation of callback expiry time afs: Make dynamic root population wait uninterruptibly for proc_cells_lock afs: Make some RPC operations non-interruptible rxrpc: Allow the kernel to mark a call as being non-interruptible afs: Fix error propagation from server record check/update afs: Fix the maximum lifespan of VL and probe calls rxrpc: Provide kernel interface to set max lifespan on a call afs: Fix "kAFS: AFS vnode with undefined type 0" afs: Fix cell DNS lookup Add wait_var_event_interruptible() dns_resolver: Allow used keys to be invalidated afs: Fix afs_cell records to always have a VL server list record afs: Fix missing lock when replacing VL server list afs: Fix afs_xattr_get_yfs() to not try freeing an error value afs: Fix incorrect error handling in afs_xattr_get_acl() afs: Fix key leak in afs_release() and afs_evict_inode()
Diffstat (limited to 'fs/afs/inode.c')
-rw-r--r--fs/afs/inode.c12
1 files changed, 5 insertions, 7 deletions
diff --git a/fs/afs/inode.c b/fs/afs/inode.c
index c4652b42d545..bf8f56e851df 100644
--- a/fs/afs/inode.c
+++ b/fs/afs/inode.c
@@ -136,7 +136,7 @@ int afs_fetch_status(struct afs_vnode *vnode, struct key *key, bool new_inode)
vnode->flags);
ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, vnode, key)) {
+ if (afs_begin_vnode_operation(&fc, vnode, key, true)) {
while (afs_select_fileserver(&fc)) {
fc.cb_break = afs_calc_vnode_cb_break(vnode);
afs_fs_fetch_file_status(&fc, NULL, new_inode);
@@ -430,12 +430,9 @@ int afs_validate(struct afs_vnode *vnode, struct key *key)
vnode->cb_s_break = vnode->cb_interest->server->cb_s_break;
vnode->cb_v_break = vnode->volume->cb_v_break;
valid = false;
- } else if (vnode->status.type == AFS_FTYPE_DIR &&
- (!test_bit(AFS_VNODE_DIR_VALID, &vnode->flags) ||
- vnode->cb_expires_at - 10 <= now)) {
+ } else if (test_bit(AFS_VNODE_ZAP_DATA, &vnode->flags)) {
valid = false;
- } else if (test_bit(AFS_VNODE_ZAP_DATA, &vnode->flags) ||
- vnode->cb_expires_at - 10 <= now) {
+ } else if (vnode->cb_expires_at - 10 <= now) {
valid = false;
} else {
valid = true;
@@ -573,6 +570,7 @@ void afs_evict_inode(struct inode *inode)
}
#endif
+ afs_prune_wb_keys(vnode);
afs_put_permits(rcu_access_pointer(vnode->permit_cache));
key_put(vnode->silly_key);
vnode->silly_key = NULL;
@@ -616,7 +614,7 @@ int afs_setattr(struct dentry *dentry, struct iattr *attr)
}
ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, vnode, key)) {
+ if (afs_begin_vnode_operation(&fc, vnode, key, false)) {
while (afs_select_fileserver(&fc)) {
fc.cb_break = afs_calc_vnode_cb_break(vnode);
afs_fs_setattr(&fc, attr);