mirror of https://gitee.com/openkylin/linux.git
cd0f3aaebc
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Merge tag 'afs-fixes-20190620' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull AFS fixes from David Howells:
"The in-kernel AFS client has been undergoing testing on opendev.org on
one of their mirror machines. They are using AFS to hold data that is
then served via apache, and Ian Wienand had reported seeing oopses,
spontaneous machine reboots and updates to volumes going missing. This
patch series appears to have fixed the problem, very probably due to
patch (2), but it's not 100% certain.
(1) Fix the printing of the "vnode modified" warning to exclude checks
on files for which we don't have a callback promise from the
server (and so don't expect the server to tell us when it
changes).
Without this, for every file or directory for which we still have
an in-core inode that gets changed on the server, we may get a
message logged when we next look at it. This can happen in bulk
if, for instance, someone does "vos release" to update a R/O
volume from a R/W volume and a whole set of files are all changed
together.
We only really want to log a message if the file changed and the
server didn't tell us about it or we failed to track the state
internally.
(2) Fix accidental corruption of either afs_vlserver struct objects or
the the following memory locations (which could hold anything).
The issue is caused by a union that points to two different
structs in struct afs_call (to save space in the struct). The call
cleanup code assumes that it can simply call the cleanup for one
of those structs if not NULL - when it might be actually pointing
to the other struct.
This means that every Volume Location RPC op is going to corrupt
something.
(3) Fix an uninitialised spinlock. This isn't too bad, it just causes
a one-off warning if lockdep is enabled when "vos release" is
called, but the spinlock still behaves correctly.
(4) Fix the setting of i_block in the inode. This causes du, for
example, to produce incorrect results, but otherwise should not be
dangerous to the kernel"
* tag 'afs-fixes-20190620' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Fix setting of i_blocks
afs: Fix uninitialised spinlock afs_volume::cb_break_lock
afs: Fix vlserver record corruption
afs: Fix over zealous "vnode modified" warnings
|
||
|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| addr_list.c | ||
| afs.h | ||
| afs_cm.h | ||
| afs_fs.h | ||
| afs_vl.h | ||
| cache.c | ||
| callback.c | ||
| cell.c | ||
| cmservice.c | ||
| dir.c | ||
| dir_edit.c | ||
| dir_silly.c | ||
| dynroot.c | ||
| file.c | ||
| flock.c | ||
| fs_probe.c | ||
| fsclient.c | ||
| inode.c | ||
| internal.h | ||
| main.c | ||
| misc.c | ||
| mntpt.c | ||
| netdevices.c | ||
| proc.c | ||
| protocol_yfs.h | ||
| rotate.c | ||
| rxrpc.c | ||
| security.c | ||
| server.c | ||
| server_list.c | ||
| super.c | ||
| vl_list.c | ||
| vl_probe.c | ||
| vl_rotate.c | ||
| vlclient.c | ||
| volume.c | ||
| write.c | ||
| xattr.c | ||
| xdr_fs.h | ||
| yfsclient.c | ||