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linux-stable/fs/afs
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David Howells 3f19b2ab97 vfs, afs, ext4: Make the inode hash table RCU searchable 
Make the inode hash table RCU searchable so that searches that want to
access or modify an inode without taking a ref on that inode can do so
without taking the inode hash table lock.

The main thing this requires is some RCU annotation on the list
manipulation operations.  Inodes are already freed by RCU in most cases.

Users of this interface must take care as the inode may be still under
construction or may be being torn down around them.

There are at least three instances where this can be of use:

 (1) Testing whether the inode number iunique() is going to return is
     currently unique (the iunique_lock is still held).

 (2) Ext4 date stamp updating.

 (3) AFS callback breaking.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
cc: linux-ext4@vger.kernel.org
cc: linux-afs@lists.infradead.org
2020-05-31 15:19:44 +01:00
..
addr_list.c afs: Use kfree_rcu() instead of casting kfree() to rcu_callback_t 2020-03-13 10:47:33 -07:00
afs.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
afs_cm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
afs_fs.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
afs_vl.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
cache.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
callback.c vfs, afs, ext4: Make the inode hash table RCU searchable 2020-05-31 15:19:44 +01:00
cell.c afs: Fix characters allowed into cell names 2020-01-26 08:54:04 -08:00
cmservice.c afs: Fix to actually set AFS_SERVER_FL_HAVE_EPOCH 2020-04-24 16:32:49 +01:00
dir.c afs: Fix afs_d_validate() to set the right directory version 2020-04-13 15:09:01 +01:00
dir_edit.c afs: Remove set but not used variables 'before', 'after' 2019-11-21 20:36:00 +00:00
dir_silly.c afs: Fix race between post-modification dir edit and readdir/d_revalidate 2020-04-13 15:09:01 +01:00
dynroot.c afs: Fix creation calls in the dynamic root to fail with EOPNOTSUPP 2019-12-11 17:47:51 +00:00
file.c afs: Rename desc -> req in afs_fetch_data() 2019-11-21 09:12:17 +00:00
flock.c fs: afs: Use pr_warn instead of pr_warning 2019-10-18 15:01:55 +02:00
fs_probe.c rxrpc: Fix a warning 2020-05-23 00:31:39 +01:00
fsclient.c afs: Don't unlock fetched data pages until the op completes successfully 2020-05-18 10:29:17 -07:00
inode.c Printk changes for 5.5 2019-11-25 19:40:40 -08:00
internal.h afs: Make record checking use TASK_UNINTERRUPTIBLE when appropriate 2020-04-24 16:33:32 +01:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
main.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
Makefile afs: do not send list of client addresses 2019-06-02 18:06:26 -07:00
misc.c AFS development 2019-07-10 20:55:33 -07:00
mntpt.c afs: Fix mountpoint parsing 2019-12-11 16:56:54 +00:00
proc.c afs: Show volume name in /proc/net/afs/<cell>/volumes 2019-12-11 17:48:20 +00:00
protocol_uae.h afs: Add support for the UAE error table 2019-06-28 18:37:53 +01:00
protocol_yfs.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
rotate.c afs: Make record checking use TASK_UNINTERRUPTIBLE when appropriate 2020-04-24 16:33:32 +01:00
rxrpc.c afs: Fix client call Rx-phase signal handling 2020-03-13 23:04:35 +00:00
security.c afs: Support RCU pathwalk 2019-09-02 11:43:54 +01:00
server.c afs: Make record checking use TASK_UNINTERRUPTIBLE when appropriate 2020-04-24 16:33:32 +01:00
server_list.c AFS development 2019-07-10 20:55:33 -07:00
super.c fs_parse: fold fs_parameter_desc/fs_parameter_spec 2020-02-07 14:48:37 -05:00
vl_list.c fs/afs: Replace rcu_swap_protected() with rcu_replace_pointer() 2019-10-30 08:44:27 -07:00
vl_probe.c rxrpc: Fix the excessive initial retransmission timeout 2020-05-11 16:42:28 +01:00
vl_rotate.c afs: Remove some unused bits 2020-04-24 16:32:49 +01:00
vlclient.c afs: Switch the naming of call->iter and call->_iter 2019-11-21 09:12:17 +00:00
volume.c afs: Make record checking use TASK_UNINTERRUPTIBLE when appropriate 2020-04-24 16:33:32 +01:00
write.c AFS development 2019-07-10 20:55:33 -07:00
xattr.c afs: xattr: use scnprintf 2019-11-21 09:12:17 +00:00
xdr_fs.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
yfsclient.c afs: Don't unlock fetched data pages until the op completes successfully 2020-05-18 10:29:17 -07:00