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Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm:
dlm: fs/dlm/ast.c: fix warning
dlm: add new debugfs entry
dlm: add time stamp of blocking callback
dlm: change lock time stamping
dlm: improve how bast mode handling
dlm: remove extra blocking callback check
dlm: replace schedule with cond_resched
dlm: remove kmap/kunmap
dlm: trivial annotation of be16 value
dlm: fix up memory allocation flags
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fs/dlm/ast.c: In function 'dlm_astd':
fs/dlm/ast.c:64: warning: 'bastmode' may be used uninitialized in this function
Cleans code up.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Teigland <teigland@redhat.com>
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The new debugfs entry dumps all rsb and lkb structures, and includes
a lot more information than has been available before. This includes
the new timestamps added by a previous patch for debugging callback
issues.
Signed-off-by: David Teigland <teigland@redhat.com>
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Record the time the latest blocking callback was queued for
a lock. This will be used for debugging in combination with
lock queue timestamp changes in the previous patch.
Signed-off-by: David Teigland <teigland@redhat.com>
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Use ktime instead of jiffies for timestamping lkb's. Also stamp the
time on every lkb whenever it's added to a resource queue, instead of
just stamping locks subject to timeouts. This will allow us to use
timestamps more widely for debugging all locks.
Signed-off-by: David Teigland <teigland@redhat.com>
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The lkb bastmode value is set in the context of processing the
lock, and read by the dlm_astd thread. Because it's accessed
in these two separate contexts, the writing/reading ought to
be done under a lock. This is simple to do by setting it and
reading it when the lkb is added to and removed from dlm_astd's
callback list which is properly locked.
Signed-off-by: David Teigland <teigland@redhat.com>
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Just before delivering a blocking callback (bast), the dlm_astd
thread checks again that the granted mode of the lkb actually
blocks the mode requested by the bast. The idea behind this was
originally that the granted mode may have changed since the bast
was queued, making the callback now unnecessary. Reasons for
removing this extra check are:
- dlm_astd doesn't lock the rsb before reading the lkb grmode, so
it's not technically safe (this removes the long standing FIXME)
- after running some tests, it doesn't appear the check ever actually
eliminates a bast
- delivering an unnecessary blocking callback isn't a bad thing and
can happen anyway
Signed-off-by: David Teigland <teigland@redhat.com>
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This is a one-liner to use cond_resched() rather than schedule()
in the ast delivery loop. It should not be necessary to schedule
every time, so this will save some cpu time while continuing to
allow scheduling when required.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
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The pages used in lowcomms are not highmem, so kmap is not necessary.
Cc: Christine Caulfield <ccaulfie@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
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fs/dlm/dir.c:419:14: warning: incorrect type in assignment (different base types)
fs/dlm/dir.c:419:14: expected unsigned short [unsigned] [addressable] [assigned] [usertype] be_namelen
fs/dlm/dir.c:419:14: got restricted __be16 [usertype] <noident>
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David Teigland <teigland@redhat.com>
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Use ls_allocation for memory allocations, which a cluster fs sets to
GFP_NOFS. Use GFP_NOFS for allocations when no lockspace struct is
available. Taking dlm locks needs to avoid calling back into the
cluster fs because write-out can require taking dlm locks.
Cc: Christine Caulfield <ccaulfie@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: (27 commits)
GFS2: Use DEFINE_SPINLOCK
GFS2: Fix use-after-free bug on umount (try #2)
Revert "GFS2: Fix use-after-free bug on umount"
GFS2: Streamline alloc calculations for writes
GFS2: Send useful information with uevent messages
GFS2: Fix use-after-free bug on umount
GFS2: Remove ancient, unused code
GFS2: Move four functions from super.c
GFS2: Fix bug in gfs2_lock_fs_check_clean()
GFS2: Send some sensible sysfs stuff
GFS2: Kill two daemons with one patch
GFS2: Move gfs2_recoverd into recovery.c
GFS2: Fix "truncate in progress" hang
GFS2: Clean up & move gfs2_quotad
GFS2: Add more detail to debugfs glock dumps
GFS2: Banish struct gfs2_rgrpd_host
GFS2: Move rg_free from gfs2_rgrpd_host to gfs2_rgrpd
GFS2: Move rg_igeneration into struct gfs2_rgrpd
GFS2: Banish struct gfs2_dinode_host
GFS2: Move i_size from gfs2_dinode_host and rename it to i_disksize
...
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SPIN_LOCK_UNLOCKED is deprecated. The following makes the change suggested
in Documentation/spinlocks.txt
The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@@
declarer name DEFINE_SPINLOCK;
identifier xxx_lock;
@@
- spinlock_t xxx_lock = SPIN_LOCK_UNLOCKED;
+ DEFINE_SPINLOCK(xxx_lock);
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This should solve the issue with the previous attempt at fixing this.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This reverts commit 78802499912f1ba31ce83a94c55b5a980f250a43.
The original patch is causing problems in relation to order of
operations at umount in relation to jdata files. I need to fix
this a different way.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This patch removes some unused code, and make the calculation
of the number of blocks required conditional in order to reduce
the number of times this (potentially expensive) calculation
is done.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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In order to distinguish between two differing uevent messages
and to avoid using the (racy) method of reading status from
sysfs in future, this adds some status information to our
uevent messages.
Btw, before anybody says "sysfs isn't racy", I'm aware of that,
but the way that GFS2 was using it (send an ambiugous uevent and
then expect the receiver to read sysfs to find out the status
of the reported operation) was.
The additional benefit of using the new interface is that it
should be possible for a node to recover multiple journals
at the same time, since there is no longer any confusion as
to which journal the status belongs to.
At some future stage, when all the userland programs have been
converted, I intend to remove the old interface.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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There was a use-after-free with the GFS2 super block during
umount. This patch moves almost all of the umount code from
->put_super into ->kill_sb, the only bit that cannot be moved
being the glock hash clearing which has to remain as ->put_super
due to umount ordering requirements. As a result its now obvious
that the kfree is the final operation, whereas before it was
hidden in ->put_super.
Also gfs2_jindex_free is then only referenced from a single file
so thats moved and marked static too.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Remove code that used to have something to do with initrd
but has been unused for a long time.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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The functions which are being moved can all be marked
static in their new locations, since they only have
a single caller each. Their new locations are more
logical than before and some of the functions are
small enough that the compiler might well inline them.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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gfs2_lock_fs_check_clean() should not be calling gfs2_jindex_hold()
since it doesn't work like rindex hold, despite the comment. That
allows gfs2_jindex_hold() to be moved into ops_fstype.c where it
can be made static.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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We ought to inform the user of the locktable and lockproto for each
uevent we generate.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This patch removes the two daemons, gfs2_scand and gfs2_glockd
and replaces them with a shrinker which is called from the VM.
The net result is that GFS2 responds better when there is memory
pressure, since it shrinks the glock cache at the same rate
as the VFS shrinks the dcache and icache. There are no longer
any time based criteria for shrinking glocks, they are kept
until such time as the VM asks for more memory and then we
demote just as many glocks as required.
There are potential future changes to this code, including the
possibility of sorting the glocks which are to be written back
into inode number order, to get a better I/O ordering. It would
be very useful to have an elevator based workqueue implementation
for this, as that would automatically deal with the read I/O cases
at the same time.
This patch is my answer to Andrew Morton's remark, made during
the initial review of GFS2, asking why GFS2 needs so many kernel
threads, the answer being that it doesn't :-) This patch is a
net loss of about 200 lines of code.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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By moving gfs2_recoverd, we can make an additional function static
and it also leaves only (the already scheduled for removal) gfs2_glockd
in daemon.c.
At the same time the declaration of gfs2_quotad is moved to quota.h
to reflect the new location of gfs2_quotad in a previous patch. Also
the recovery.h and quota.h headers are cleaned up.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Following on from the recent clean up of gfs2_quotad, this patch moves
the processing of "truncate in progress" inodes from the glock workqueue
into gfs2_quotad. This fixes a hang due to the "truncate in progress"
processing requiring glocks in order to complete.
It might seem odd to use gfs2_quotad for this particular item, but
we have to use a pre-existing thread since creating a thread implies
a GFP_KERNEL memory allocation which is not allowed from the glock
workqueue context. Of the existing threads, gfs2_logd and gfs2_recoverd
may deadlock if used for this operation. gfs2_scand and gfs2_glockd are
both scheduled for removal at some (hopefully not too distant) future
point. That leaves only gfs2_quotad whose workload is generally fairly
light and is easily adapted for this extra task.
Also, as a result of this change, it opens the way for a future patch to
make the reading of the inode's information asynchronous with respect to
the glock workqueue, which is another improvement that has been on the list
for some time now.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This patch is a clean up of gfs2_quotad prior to giving it an
extra job to do in addition to the current portfolio of updating
the quota and statfs information from time to time.
As a result it has been moved into quota.c allowing one of the
functions it calls to be made static. Also the clean up allows
the two existing functions to have separate timeouts and also
to coexist with its future role of dealing with the "truncate in
progress" inode flag.
The (pointless) setting of gfs2_quotad_secs is removed since we
arrange to only wake up quotad when one of the two timers expires.
In addition the struct gfs2_quota_data is moved into a slab cache,
mainly for easier debugging. It should also be possible to use
a shrinker in the future, rather than the current scheme of scanning
the quota data entries from time to time.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Although the glock dumps print quite a lot of information about
the glocks themselves, there are more things which can be
usefully added to the dump realting to the objects themselves.
This patch adds a few more fields to the inode and resource
group lines, which should be useful for debugging.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This patch moves the final field so that we can get rid
of struct gfs2_rgrpd_host, as promised some time ago. Also
by rearranging the fields slightly, we are able to reduce
the size of the gfs2_rgrpd structure at the same time.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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The second of three fields which need to move, in order
to remove the struct gfs2_rgrpd_host.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This moves one of the fields of struct gfs2_rgrpd_host into
the struct gfs2_rgrpd with the eventual aim of removing
the struct rgrpd_host completely.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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The final field in gfs2_dinode_host was the i_flags field. Thats
renamed to i_diskflags in order to avoid confusion with the existing
inode flags, and moved into the inode proper at a suitable location
to avoid creating a "hole".
At that point struct gfs2_dinode_host is no longer needed and as
promised (quite some time ago!) it can now be removed completely.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This patch moved the i_size field from the gfs2_dinode_host and
following the ext3 convention renames it i_disksize.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This moves the di_eattr field out of gfs2_inode_host and
into the inode proper.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This moves the directory entry count into the proper inode.
Potentially we could get this to share the space used by
something else in the future, but this is one more step
on the way to removing the gfs2_dinode_host structure.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This moves the generation number from the gfs2_dinode_host
into the gfs2_inode structure. Eventually the plan is to get
rid of the gfs2_dinode_host structure completely.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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fs/gfs2/glock.c:308:5: warning: context problem in 'do_promote': '_spin_unlock' expected different context
fs/gfs2/glock.c:308:5: context '*gl+28': wanted >= 1, got 0
fs/gfs2/glock.c:529:2: warning: context problem in 'do_xmote': '_spin_unlock' expected different context
fs/gfs2/glock.c:529:2: context '*gl+28': wanted >= 1, got 0
fs/gfs2/glock.c:925:3: warning: context problem in 'add_to_queue': '_spin_unlock' expected different context
fs/gfs2/glock.c:925:3: context '*gl+28': wanted >= 1, got 0
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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There is a bug in writepage and delete_inode which allows jdata files to
invalidate pages from the address space without being in a transaction at
the time. This causes problems in case the pages are in the journal. This
patch fixes that case and prevents the resulting oops.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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Move the contents of some headers which contained very
little into more sensible places, and remove the original
header files. This should make it easier to find things.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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This patch implements the FIEMAP ioctl for GFS2. We can use the generic
code (aside from a lock order issue, solved as per Ted Tso's suggestion)
for which I've introduced a new variant of the generic function. We also
have one exception to deal with, namely stuffed files, so we do that
"by hand", setting all the required flags.
This has been tested with a modified (I could only find an old version) of
Eric's test program, and appears to work correctly.
This patch does not currently support FIEMAP of xattrs, but the plan is to add
that feature at some future point.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Cc: Theodore Tso <tytso@mit.edu>
Cc: Eric Sandeen <sandeen@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: (138 commits)
ocfs2: Access the right buffer_head in ocfs2_merge_rec_left.
ocfs2: use min_t in ocfs2_quota_read()
ocfs2: remove unneeded lvb casts
ocfs2: Add xattr support checking in init_security
ocfs2: alloc xattr bucket in ocfs2_xattr_set_handle
ocfs2: calculate and reserve credits for xattr value in mknod
ocfs2/xattr: fix credits calculation during index create
ocfs2/xattr: Always updating ctime during xattr set.
ocfs2/xattr: Remove extend_trans call and add its credits from the beginning
ocfs2/dlm: Fix race during lockres mastery
ocfs2/dlm: Fix race in adding/removing lockres' to/from the tracking list
ocfs2/dlm: Hold off sending lockres drop ref message while lockres is migrating
ocfs2/dlm: Clean up errors in dlm_proxy_ast_handler()
ocfs2/dlm: Fix a race between migrate request and exit domain
ocfs2: One more hamming code optimization.
ocfs2: Another hamming code optimization.
ocfs2: Don't hand-code xor in ocfs2_hamming_encode().
ocfs2: Enable metadata checksums.
ocfs2: Validate superblock with checksum and ecc.
ocfs2: Checksum and ECC for directory blocks.
...
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In commit "ocfs2: Use metadata-specific ocfs2_journal_access_*()
functions", the wrong buffer_head is accessed. So change it
to the right buffer_head.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Acked-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
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This is preferred to min().
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
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dlmglue.c has lots of code which casts the return value of ocfs2_dlm_lvb().
This is pointless however, as ocfs2_dlm_lvb() returns void *.
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
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We must check whether ocfs2 volume support xattr in init_security,
if not support xattr and security is enable, would cause failure of mknod.
Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
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In extreme situation, may need xattr bucket for setting
security entry and acl entries during mknod. This only
happens when block size is too small.
Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
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We extend the credits for xattr's large value in set_value_outside
before, this can give rise to a credits issue when we set one security
entry and two acl entries duing mknod. As we remove extend_trans form
set_value_outside, we must calculate and reserve the credits for
xattr's large value in mknod.
Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
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When creating a xattr index block, the old calculation forget
to add credits for the meta change of the alloc file. So add
more credits and more comments to explain it.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
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In xattr set, we should always update ctime if the operation goes
sucessfully. The old one mistakenly put it in ocfs2_xattr_set_entry
which is only called when we set xattr in inode or xattr block. The
side benefit is that it resolve the bug 1052 since in that scenario,
ocfs2_calc_xattr_set_need only calc out the xattr set credits while
ocfs2_xattr_set_entry update the inode also which isn't concerned with
the process of xattr set.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
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Actually, when setting a new xattr value, we know it from the very
beginning, and it isn't like the extension of bucket in which case
we can't figure it out. So remove ocfs2_extend_trans in that function
and calculate it before the transaction. It also relieve acl operation
from the worry about the side effect of ocfs2_extend_trans.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
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