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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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unfortunately, nlink_t may be smaller than 32 bits and ->i_nlink
on ocfs2 can grow up to 0xffffffff; storing it in nlink_t variable
will lose upper bits on such architectures. Needs to be made u32,
until we get kernel-side nlink_t uniformly 32bit...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
dlm: add recovery callbacks
dlm: add node slots and generation
dlm: move recovery barrier calls
dlm: convert rsb list to rb_tree
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These new callbacks notify the dlm user about lock recovery.
GFS2, and possibly others, need to be aware of when the dlm
will be doing lock recovery for a failed lockspace member.
In the past, this coordination has been done between dlm and
file system daemons in userspace, which then direct their
kernel counterparts. These callbacks allow the same
coordination directly, and more simply.
Signed-off-by: David Teigland <teigland@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (53 commits)
Kconfig: acpi: Fix typo in comment.
misc latin1 to utf8 conversions
devres: Fix a typo in devm_kfree comment
btrfs: free-space-cache.c: remove extra semicolon.
fat: Spelling s/obsolate/obsolete/g
SCSI, pmcraid: Fix spelling error in a pmcraid_err() call
tools/power turbostat: update fields in manpage
mac80211: drop spelling fix
types.h: fix comment spelling for 'architectures'
typo fixes: aera -> area, exntension -> extension
devices.txt: Fix typo of 'VMware'.
sis900: Fix enum typo 'sis900_rx_bufer_status'
decompress_bunzip2: remove invalid vi modeline
treewide: Fix comment and string typo 'bufer'
hyper-v: Update MAINTAINERS
treewide: Fix typos in various parts of the kernel, and fix some comments.
clockevents: drop unknown Kconfig symbol GENERIC_CLOCKEVENTS_MIGR
gpio: Kconfig: drop unknown symbol 'CS5535_GPIO'
leds: Kconfig: Fix typo 'D2NET_V2'
sound: Kconfig: drop unknown symbol ARCH_CLPS7500
...
Fix up trivial conflicts in arch/powerpc/platforms/40x/Kconfig (some new
kconfig additions, close to removed commented-out old ones)
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The below patch fixes some typos in various parts of the kernel, as well as fixes some comments.
Please let me know if I missed anything, and I will try to get it changed and resent.
Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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don't open-code it...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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vfs_create() ignores everything outside of 16bit subset of its
mode argument; switching it to umode_t is obviously equivalent
and it's the only caller of the method
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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vfs_mkdir() gets int, but immediately drops everything that might not
fit into umode_t and that's the only caller of ->mkdir()...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Seeing that just about every destructor got that INIT_LIST_HEAD() copied into
it, there is no point whatsoever keeping this INIT_LIST_HEAD in inode_init_once();
the cost of taking it into inode_init_always() will be negligible for pipes
and sockets and negative for everything else. Not to mention the removal of
boilerplate code from ->destroy_inode() instances...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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new helper (wrapper around mnt_drop_write()) to be used in pair with
mnt_want_write_file().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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it's both faster (in case when file has been opened for write) and cleaner.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2: (31 commits)
ocfs2: avoid unaligned access to dqc_bitmap
ocfs2: Use filemap_write_and_wait() instead of write_inode_now()
ocfs2: honor O_(D)SYNC flag in fallocate
ocfs2: Add a missing journal credit in ocfs2_link_credits() -v2
ocfs2: send correct UUID to cleancache initialization
ocfs2: Commit transactions in error cases -v2
ocfs2: make direntry invalid when deleting it
fs/ocfs2/dlm/dlmlock.c: free kmem_cache_zalloc'd data using kmem_cache_free
ocfs2: Avoid livelock in ocfs2_readpage()
ocfs2: serialize unaligned aio
ocfs2: Implement llseek()
ocfs2: Fix ocfs2_page_mkwrite()
ocfs2: Add comment about orphan scanning
ocfs2: Clean up messages in the fs
ocfs2/cluster: Cluster up now includes network connections too
ocfs2/cluster: Add new function o2net_fill_node_map()
ocfs2/cluster: Fix output in file elapsed_time_in_ms
ocfs2/dlm: dlmlock_remote() needs to account for remastery
ocfs2/dlm: Take inflight reference count for remotely mastered resources too
ocfs2/dlm: Cleanup dlm_wait_for_node_death() and dlm_wait_for_node_recovery()
...
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The dqc_bitmap field of struct ocfs2_local_disk_chunk is 32-bit aligned,
but not 64-bit aligned. The dqc_bitmap is accessed by ocfs2_set_bit(),
ocfs2_clear_bit(), ocfs2_test_bit(), or ocfs2_find_next_zero_bit(). These
are wrapper macros for ext2_*_bit() which need to take an unsigned long
aligned address (though some architectures are able to handle unaligned
address correctly)
So some 64bit architectures may not be able to access the dqc_bitmap
correctly.
This avoids such unaligned access by using another wrapper functions for
ext2_*_bit(). The code is taken from fs/ext4/mballoc.c which also need to
handle unaligned bitmap access.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
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Since ocfs2 has no ->write_inode method, there's no point in calling
write_inode_now() from ocfs2_cleanup_delete_inode(). Use
filemap_write_and_wait() instead. This helps us to cleanup inode writing
interfaces...
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
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We need to sync the transaction which updates i_size if the file is marked
as needing sync semantics.
Signed-off-by: Mark Fasheh <mfasheh@suse.de>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
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With indexed_dir enabled, ocfs2 maintains a list of dirblocks having
space.
The credit calculation in ocfs2_link_credits() did not correctly account
for adding an entry that exactly fills a dirblock that triggers removing
that dirblock by changing the pointer in the previous block in the list.
The credit calculation did not account for that previous block.
To expose, do:
mkfs.ocfs2 -b 512 -M local /dev/sdX
mount /dev/sdX /ocfs2
mkdir /ocfs2/linkdir
touch /ocfs2/linkdir/file1
for i in `seq 1 29` ; do link /ocfs2/linkdir/file1
/ocfs2/linkdir/linklinklinklinklinklink$i; done
rm -f /ocfs2/linkdir/linklinklinklinklinklink10
sleep 8
link /ocfs2/linkdir/file1
/ocfs2/linkdir/linklinklinklinklinklinkaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Note:
The link names have been crafted for a 512 byte blocksize. Reproducing
with a larger blocksize will require longer (or more) links. The sleep
is important. We want jbd2 to commit the transaction so that the missing
block does not piggy back on account of the previous transaction.
Signed-off-by: XiaoweiHu <xiaowei.hu at oracle.com>
Reviewed-by: WengangWang <wen.gang.wang at oracle.com>
Reviewed-by: Sunil.Mushran <sunil.mushran at oracle.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
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ocfs2: Fix cleancache initialization call to correctly pass uuid
As reported by Steven Whitehouse in https://lkml.org/lkml/2011/5/27/221
the ocfs2 volume UUID is incorrectly passed to cleancache.
As a result, shared-ephemeral tmem pools will not actually
be created; instead they will be private (unshared) which
misses out on a major benefit of tmem.
Reported-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
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There are three cases found that in error cases, journal transactions are not
committed nor aborted. We should take care of these case by committing the
transactions. Otherwise, there would left a journal handle which will lead to
, in same process context, the comming ocfs2_start_trans() gets wrong credits.
Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
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When we deleting a direntry from a directory, if it's the first in a block we
invalid it by setting inode to 0; otherwise, we merge the deleted one to the
prior and contiguous direntry. And we don't truncate directories.
There is a problem for the later case since inode is not set to 0.
This problem happens when the caller passes a file position as parameter to
ocfs2_dir_foreach_blk(). If the position happens to point to a stale(not
the first, deleted in betweens of ocfs2_dir_foreach_blk()s) direntry, we are
not able to recognize its staleness. So that we treat it as a live one wrongly.
The fix is to set inode to 0 in both cases indicating the direntry is stale.
This won't introduce additional IOs.
Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
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Memory allocated using kmem_cache_zalloc should be freed using
kmem_cache_free, not kfree.
The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression x,e,e1,e2;
@@
x = kmem_cache_zalloc(e1,e2)
... when != x = e
?-kfree(x)
+kmem_cache_free(e1,x)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
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into ocfs2-fixes
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ocfs2 implements its own llseek() to provide the SEEK_HOLE/SEEK_DATA
functionality.
SEEK_HOLE sets the file pointer to the start of either a hole or an unwritten
(preallocated) extent, that is greater than or equal to the supplied offset.
SEEK_DATA sets the file pointer to the start of an allocated extent (not
unwritten) that is greater than or equal to the supplied offset.
If the supplied offset is on a desired region, then the file pointer is set
to it. Offsets greater than or equal to the file size return -ENXIO.
Unwritten (preallocated) extents are considered holes because the file system
treats reads to such regions in the same way as it does to holes.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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This patch address two shortcomings in ocfs2_page_mkwrite():
1. Makes the function return better VM_FAULT_* errors.
2. It handles a error that is triggered when a page is dropped from the mapping
due to memory pressure. This patch locks the page to prevent that.
[Patch was cleaned up by Sunil Mushran.]
Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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Add a comment that explains the reason as to why orphan scan scans all the slots.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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Convert useful messages from ML_NOTICE to KERN_NOTICE to improve readability.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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The cluster up check only checks to see if the node is heartbeating or not.
If yes it continues assuming that the node is connected to all the nodes. But
if that is not the case, the cluster join aborts with a stack of errors that
are not easy to comprehend.
This patch adds the network connect check upfront and prints the nodes that
the node is not yet connected to, before aborting.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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Patch adds function o2net_fill_node_map() to return the bitmap of nodes that
it is connected to. This bitmap is also accessible by the user via the debugfs
file, /sys/kernel/debug/o2net/connected_nodes.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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The o2hb debugfs file, elapsed_time_in_ms, should return values only after the
timer is armed atleast once.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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In dlmlock_remote(), we wait for the resource to stop being active before
setting the inprogress flag. Active includes recovery, migration, etc.
The problem here is that if the resource was being recovered or migrated, the
new owner could very well be that node itself (and thus not a remote node).
This problem was observed in Oracle bug#12583620. The error messages observed
were as follows:
dlm_send_remote_lock_request:337 ERROR: Error -40 (ELOOP) when sending message 503 (key 0xd6d8c7) to node 2
dlmlock_remote:271 ERROR: dlm status = DLM_BADARGS
dlmlock:751 ERROR: dlm status = DLM_BADARGS
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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The inflight reference count, in the lock resource, is taken to pin the resource
in memory. We take it when a new resource is created and release it after a
lock is attached to it. We do this to prevent the resource from getting purged
prematurely.
Earlier this reference count was being taken for locally mastered resources
only. This patch extends the same functionality for remotely mastered ones.
We are doing this because the same premature purging could occur for remotely
mastered resources if the remote node were to die before completion of the
create lock.
Fix for Oracle bug#12405575.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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dlm_wait_for_node_death() and dlm_wait_for_node_recovery() needed a facelift.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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Add mlog to trace adding and removing the resource from/to the hash table.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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Patch cleans up helpers that set/clear refmap bits and grab/drop inflight lock
ref counts.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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dlm_finish_local_lockres_recovery() needed a facelift.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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o2cb messages needed a facelift.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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o2dlm messages needed a facelift.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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o2net messages needed a facelift.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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Currently if the heartbeat device is hard-ro, the o2hb thread keeps chugging
along and dumping errors along the way. The user needs to manually stop the
heartbeat.
The patch addresses this shortcoming by adding a limit to the number of times
the hb thread will iterate in an unsteady state. If the hb thread does not
ready steady state in that many interation, the start is aborted.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
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When someone writes to an inode, readers accessing the same inode via
ocfs2_readpage() just busyloop trying to get ip_alloc_sem because
do_generic_file_read() looks up the page again and retries ->readpage()
when previous attempt failed with AOP_TRUNCATED_PAGE. When there are enough
readers, they can occupy all CPUs and in non-preempt kernel the system is
deadlocked because writer holding ip_alloc_sem is never run to release the
semaphore. Fix the problem by making reader block on ip_alloc_sem to break
the busy loop.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
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Fix a corruption that can happen when we have (two or more) outstanding
aio's to an overlapping unaligned region. Ext4
(e9e3bcecf44c04b9e6b505fd8e2eb9cea58fb94d) and xfs recently had to fix
similar issues.
In our case what happens is that we can have an outstanding aio on a region
and if a write comes in with some bytes overlapping the original aio we may
decide to read that region into a page before continuing (typically because
of buffered-io fallback). Since we have no ordering guarantees with the
aio, we can read stale or bad data into the page and then write it back out.
If the i/o is page and block aligned, then we avoid this issue as there
won't be any need to read data from disk.
I took the same approach as Eric in the ext4 patch and introduced some
serialization of unaligned async direct i/o. I don't expect this to have an
effect on the most common cases of AIO. Unaligned aio will be slower
though, but that's far more acceptable than data corruption.
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
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Using __test_and_{set,clear}_bit_le() with ignoring its return value
can be replaced with __{set,clear}_bit_le().
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: ocfs2-devel@oss.oracle.com
Signed-off-by: Joel Becker <jlbec@evilplan.org>
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The original code had a null derefence in the error handling.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
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"new_phys_cpos" is always a valid pointer here.
ocfs2_probe_alloc_group() allocates "*new_phys_cpos".
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
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ocfs2 cannot currently mount a device that is readonly at the media
("hard readonly"). Fix the broken places.
see detail: http://oss.oracle.com/bugzilla/show_bug.cgi?id=1322
[ Description edited -- Joel ]
Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Reviewed-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
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