| Commit message (Collapse) | Author | Age | Files | Lines |
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This fixes a memory leak of struct gfs2_bufdata and also some
problems in the ordered write handling code. It needs a bit
more testing, but I believe that the reference counting of
ordered write buffers should now be correct.
This is aimed at fixing Red Hat bugzilla: #201028 and #201082
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Doing the kmap() while holding the spinlock was causing recursive spinlock
problems. It seems the kmap was scheduling, although there was no warning
as I'd expect. Patrick, do we need locking around the kmap?
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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recovery.c add a brelse to deal with gfs2_replay_read_block being called
twice on the same block.
add a dput to drop the ref count on the root inode.
This was causing lingering glocks and thus causing
a mount failure to hang.
Fix a endian conversion macro that was was swizzling
16bits when it should have been swizzling 32.
Signed-off-by: Russell Cattelan <cattelan@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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When recoveries are aborted by other recoveries we can get replies to
status or names requests that we've given up on. This can cause problems
if we're making another request and receive an old reply. Add a sequence
number to status/names requests and reject replies that don't match. A
field already exists for the seq number that's used in other message
types.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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To aid debugging, it's useful to be able to see what nodeid the dlm is
waiting on for a message reply.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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When the debug buffer has filled up, break from the loop and return the
correct number of bytes that have been written.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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When we abort one recovery to do another, break out of the ping_members()
routine more quickly, and wake up the dlm_recoverd thread more quickly
instead of waiting for it to time out.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Print the violating name length in the assertion.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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In some cases we can enter write page without there being buffers
attached to the page. In this case the function to add gfs2_bufdata
to the buffers fails sliently causing further failures down the
stack.
This fix ensures that we always add buffers in writepage if they
didn't already exist (mmap is one way to trigger this).
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This patch fixes the userland DLM unlock code so that it correctly returns the
address of the userland lock status block in its completion AST.
It fixes bug #201348
Patrick
Signed-Off-By: Patrick Caulfield <pcaulfie@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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The previous patch didn't change all the gfs_ to gfs2_ so
this is the remainder.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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When the result of a posix lock request is read it needs to be matched up
with the correct waiting request. The owner field needs to be used in the
comparison since more than one process may be waiting for locks on the
same file.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Use the gfs2_ prefix on the register/unregister functions for the lock
modules. The gfs_ prefix was left from an old idea on how to share these
with gfs1.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Mmapped files were able to trigger a lock ordering bug. Private
maps do not need to take the glock so early on. Shared maps do
unfortunately, however we can get around that by adding a flag
into the flags for the struct gfs2_file. This only works because
we are taking an exclusive lock at this point, so we know that
nobody else can be racing with us.
Fixes Red Hat bugzilla: #201196
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This was a nasty bug which resulted in corruption of hash tables
in the directory code with larger directories. We forgot to
increment a pointer in the read/write routines internal to the
directory code.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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We need to use fl_owner instead of fl_pid to track the owner of a posix
lock. Pass the owner value out to user space where cluster plocks are
managed.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Tidy up some files and remove an unused routine in meta_io.h. Also
added a bit of extra debugging in meta_io.h.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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We should have been waiting for lock demotion to finish in
clear_inode.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This gets the argument to submit_bio() correct.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Some allocations in rgrp.c should have been GFP_NOFS
rather than GFP_KERNEL.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This means that we don't need to create a special inode just to contain
a struct address_space in order to read a single disk block. Instead
we read the disk block directly. Its slightly faster, and uses slightly
less memory, but the real reason for doing this is that it removes a
special case from the glock code.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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> I think you must have an old version of the base kernel as well?
> i_private no longer exists in struct inode, so you'll have to use
> something else,
I have that patch in my stack but didn't send it; for some reason I
thought it was already changed in your git tree.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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On Wed, Jul 26, 2006 at 10:47:14AM +0100, Steven Whitehouse wrote:
> Hi,
>
> I've applied all the patches you sent, but they don't build:
Argh, sorry about that... when I fixed these a long time ago they somehow
never got included in the quilt patches. I mistakenly assumed the quilt
patches matched the source I had in front of me.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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The remaining routines in page.c were all only used in one other
file, so they are now moved into the files where they are referenced
and made static. Thus page.[ch] are no longer required.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Tidy up gfs2_unstuffer_page by:
a) Moving it into bmap.c
b) Making it static
c) Calling it directly from gfs2_unstuff_dinode
d) Updating all callers of gfs2_unstuff_dinode due to one less
required argument.
It doesn't change the behaviour at all.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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The loop through all waiting locks in recover_waiters can potentially be
long, so we should schedule explicitly.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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The loop in grant_after_purge is intended to find all rsb's in each hash
bucket that have the LOCKS_PURGED flag set. The loop was quitting the
current bucket after finding just one rsb instead of going until there are
no more.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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If a node becomes the new master of an rsb during recovery, the
LOCKS_PURGED flag needs to be set on it so that any waiting/converting
locks will try to be granted.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Display more information from debugfs, particularly locks waiting for
a master lookup or operations waiting for a remote reply.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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As per comments received, alter the GFS2 direct I/O path so that
it uses the standard read functions "out of the box". Needs a
small change to one of the VFS functions. This reduces the size
of the code quite a lot and also removes the need for one new export.
Some more work remains to be done, but this is the bones of the
thing.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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traced the "umount hang due to spurious glock" issue that I was having
with gfs2meta. It's in the do_gfs2_set_flags function, which does a
gfs2_holder_init as well as a gfs2_glock_nq_init (increases ref count by
2 instead of 1).
Signed-off-by: Abhijith Das <adas@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Typo causes the error value from the wrong lock to be checked.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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My previous dlm patch added trailing whitespace damage, fix that.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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User NOQUEUE lock requests to a remote node that failed with -EAGAIN were
never being removed from a process's list of locks.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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On Thu, Jul 13, 2006 at 10:48:00PM -0700, Andrew Morton wrote:
>...
> Changes since 2.6.18-rc1-mm1:
>...
> git-gfs2.patch
>...
> git trees.
>...
This patch removes the unused EXPORT_SYMBOL_GPL(dlm_lvb_operations).
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Fix an endian coversion bug in log.c spotted by Kevin Anderson.
Cc: Kevin Anderson <kanderso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Fix a use after free bug in dir.c spotted by Kevin Anderson.
Cc: Kevin Anderson <kanderso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This changes the way the dlm handles user locks. The core dlm is now
aware of user locks so they can be dealt with more efficiently. There is
no more dlm_device module which previously managed its own duplicate copy
of every user lock.
Signed-off-by: Patrick Caulfield <pcaulfie@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Update the NFS filehandles so that they contain the file type.
Signed-off-by: Wendy Cheng <wcheng@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Fix a couple of compiler warnings in dir.c caused by
potentially uninitialised variables.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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A missing initialisation when creating a new on disk inode.
Signed-off-by: Abhijith Das <adas@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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We must not call GFP_KERNEL memory allocations while we
are holding the log lock (read or write) since that may
trigger a log flush resulting in a deadlock.
Eventually we need to fix the locking in log.c, for now
this solves the problem at the expense of freeing up memory
as fast as we would like to. This needs to be revisited
later on.
Cc: Kevin Anderson <kanderso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This adds a generation number for the eventual use of NFS to the
ondisk inode. Its backward compatible with the current code since
it doesn't really matter what the generation number is to start with,
and indeed since its set to zero, due to it being taken from padding
in both the inode and rgrp header, it should be fine.
The eventual plan is to use this rather than no_formal_ino in the
NFS filehandles. At that point no_formal_ino will be unused.
At the same time we also add a releasepages call back to the
"normal" address space for gfs2 inodes. Also I've removed a
one-linrer function thats not required any more.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This fixes a bug where we were releasing a page incorrectly
sometimes when reading a stuffed file. This fixes the bug
that Kevin reported when using Xen.
Cc: Kevin Anderson <kanderso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Remove a couple of commented out, and unused lines of
code.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This really is the correct fix this time. We just ignore all
glocks associated with inodes until the inodes are pushed
from the inode cache. At that point the glocks are queued for
reclaim, so we don't need to do it here.
Also fix one or two other minor bugs.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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