| Commit message (Collapse) | Author | Age | Files | Lines |
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Support for the share and fullflush parameters was removed.
Remove the documentation about them too.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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Replace open coded version with for_each_pci_dev
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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This effectively reverts commit 61d047be99757fd9b0af900d7abce9a13a337488.
Disabling the IOMMU can potetially allow DMA transactions to
complete without being translated. Leave it enabled, and allow
crash kernel to do the IOMMU reinitialization properly.
Cc: stable@kernel.org
Cc: Joerg Roedel <joerg.roedel@amd.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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To catch future potential issues we can add a warning whenever we issue
a command before the command buffer is fully initialized.
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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Hit another kdump problem as reported by Neil Horman. When initializaing
the IOMMU, we attach devices to their domains before the IOMMU is
fully (re)initialized. Attaching a device will issue some important
invalidations. In the context of the newly kexec'd kdump kernel, the
IOMMU may have stale cached data from the original kernel. Because we
do the attach too early, the invalidation commands are placed in the new
command buffer before the IOMMU is updated w/ that buffer. This leaves
the stale entries in the kdump context and can renders device unusable.
Simply enable the IOMMU before we do the attach.
Cc: stable@kernel.org
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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In the amd_iommu_domain_destroy the protection_domain_free
function is partly reimplemented. The 'partly' is the bug
here because the domain is not deleted from the domain list.
This results in use-after-free errors and data-corruption.
Fix it by just using protection_domain_free instead.
Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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Since acpi_table_parse ignores the return values of the
parsing function this patch introduces a workaround and
reports these errors upstream via a global variable.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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After a guest is shutdown, assigned devices are not properly
returned to the pt domain. This can leave the device using
stale cached IOMMU data, and result in a non-functional
device after it's re-bound to the host driver. For example,
I see this upon rebinding:
AMD-Vi: Event logged [IO_PAGE_FAULT device=02:00.0 domain=0x0000 address=0x000000007e2a8000 flags=0x0050]
AMD-Vi: Event logged [IO_PAGE_FAULT device=02:00.0 domain=0x0000 address=0x000000007e2a8040 flags=0x0050]
AMD-Vi: Event logged [IO_PAGE_FAULT device=02:00.0 domain=0x0000 address=0x000000007e2a8080 flags=0x0050]
AMD-Vi: Event logged [IO_PAGE_FAULT device=02:00.0 domain=0x0000 address=0x000000007e2a80c0 flags=0x0050]
0000:02:00.0: eth2: Detected Hardware Unit Hang:
...
The amd_iommu_destroy_domain() function calls do_detach()
which doesn't reattach the pt domain to the device.
Use __detach_device() instead.
Cc: stable@kernel.org
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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This patch introduces a mutex to lock page table updates in
the IOMMU-API path. We can't use the spin_lock here because
this patch might sleep.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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dev was tested just above, so drop the second test.
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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Add a MAINTAINERS record for the key management facility.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
CRED: Fix memory leak in error handling
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Fix a memory leak on an OOM condition in prepare_usermodehelper_creds().
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfs:
[LogFS] Erase new journal segments
[LogFS] Move reserved segments with journal
[LogFS] Clear PagePrivate when moving journal
Simplify and fix pad_wbuf
Prevent data corruption in logfs_rewrite_block()
Use deactivate_locked_super
Fix logfs_get_sb_final error path
Write out both superblocks on mismatch
Prevent schedule while atomic in __logfs_readdir
Plug memory leak in writeseg_end_io
Limit max_pages for insane devices
Open segment file before using it
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If the device contains on old logfs image and the journal is moved to
segment that have never been used by the current logfs and not all
journal segments are erased before the next mount, the old content can
confuse mount code. To prevent this, always erase the new journal
segments.
Signed-off-by: Joern Engel <joern@logfs.org>
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Fixes a GC livelock.
Signed-off-by: Joern Engel <joern@logfs.org>
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do_logfs_journal_wl_pass() must call freeseg(), thereby clear
PagePrivate on all pages of the current journal segment.
Signed-off-by: Joern Engel <joern@logfs.org>
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A comment in the old code read:
/* The math in this function can surely use some love */
And indeed it did. In the case that area->a_used_bytes is exactly
4096 bytes below segment size it fell apart. pad_wbuf is now split
into two helpers that are significantly less complicated.
Signed-off-by: Joern Engel <joern@logfs.org>
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The comment was correct, so make the code match the comment. As the
new comment indicates, we might be able to do a little less work. But
for the current -rc series let's keep it simple and just fix the bug.
Signed-off-by: Joern Engel <joern@logfs.org>
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Found by Al Viro.
Signed-off-by: Joern Engel <joern@logfs.org>
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rootdir was already allocated, so we must iput it again.
Found by Al Viro.
Signed-off-by: Joern Engel <joern@logfs.org>
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If the first superblock is wrong and the second gets written, there
will still be a mismatch on next mount. Write both to make sure they
match.
Signed-off-by: Joern Engel <joern@logfs.org>
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Apparently filldir can sleep, which forbids kmap_atomic.
Signed-off-by: Joern Engel <joern@logfs.org>
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Signed-off-by: Joern Engel <joern@logfs.org>
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Intel SSDs have a limit of 0xffff as queue_max_hw_sectors(q). Such a
limit may make sense from a hardware pov, but it causes bio_alloc() to
return NULL.
Signed-off-by: Joern Engel <joern@logfs.org>
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logfs_recover_sb() needs it open.
Signed-off-by: Joern Engel <joern@logfs.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Do not free zero sized per cpu areas
x86: Make sure free_init_pages() frees pages on page boundary
x86: Make smp_locks end with page alignment
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This avoids an infinite loop in free_early_partial().
Add a warning to free_early_partial() to catch future problems.
-v5: put back start > end back into WARN_ONCE()
-v6: use one line for warning, suggested by Linus
-v7: more tests
-v8: remove the function name as suggested by Johannes
WARN_ONCE() will print out that function name.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-by: Joel Becker <joel.becker@oracle.com>
Tested-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: David Miller <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <1269830604-26214-4-git-send-email-yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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When CONFIG_NO_BOOTMEM=y, it could use memory more effiently, or
in a more compact fashion.
Example:
Allocated new RAMDISK: 00ec2000 - 0248ce57
Move RAMDISK from 000000002ea04000 - 000000002ffcee56 to 00ec2000 - 0248ce56
The new RAMDISK's end is not page aligned.
Last page could be shared with other users.
When free_init_pages are called for initrd or .init, the page
could be freed and we could corrupt other data.
code segment in free_init_pages():
| for (; addr < end; addr += PAGE_SIZE) {
| ClearPageReserved(virt_to_page(addr));
| init_page_count(virt_to_page(addr));
| memset((void *)(addr & ~(PAGE_SIZE-1)),
| POISON_FREE_INITMEM, PAGE_SIZE);
| free_page(addr);
| totalram_pages++;
| }
last half page could be used as one whole free page.
So page align the boundaries.
-v2: make the original initramdisk to be aligned, according to
Johannes, otherwise we have the chance to lose one page.
we still need to keep initrd_end not aligned, otherwise it could
confuse decompressor.
-v3: change to WARN_ON instead, suggested by Johannes.
-v4: use PAGE_ALIGN, suggested by Johannes.
We may fix that macro name later to PAGE_ALIGN_UP, and PAGE_ALIGN_DOWN
Add comments about assuming ramdisk start is aligned
in relocate_initrd(), change to re get ramdisk_image instead of save it
to make diff smaller. Add warning for wrong range, suggested by Johannes.
-v6: remove one WARN()
We need to align beginning in free_init_pages()
do not copy more than ramdisk_size, noticed by Johannes
Reported-by: Stanislaw Gruszka <sgruszka@redhat.com>
Tested-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: David Miller <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <1269830604-26214-3-git-send-email-yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Fix:
------------[ cut here ]------------
WARNING: at arch/x86/mm/init.c:342 free_init_pages+0x4c/0xfa()
free_init_pages: range [0x40daf000, 0x40db5c24] is not aligned
Modules linked in:
Pid: 0, comm: swapper Not tainted
2.6.34-rc2-tip-03946-g4f16b23-dirty #50 Call Trace:
[<40232e9f>] warn_slowpath_common+0x65/0x7c
[<4021c9f0>] ? free_init_pages+0x4c/0xfa
[<40881434>] ? _etext+0x0/0x24
[<40232eea>] warn_slowpath_fmt+0x24/0x27
[<4021c9f0>] free_init_pages+0x4c/0xfa
[<40881434>] ? _etext+0x0/0x24
[<40d3f4bd>] alternative_instructions+0xf6/0x100
[<40d3fe4f>] check_bugs+0xbd/0xbf
[<40d398a7>] start_kernel+0x2d5/0x2e4
[<40d390ce>] i386_start_kernel+0xce/0xd5
---[ end trace 4eaa2a86a8e2da22 ]---
Comments in vmlinux.lds.S already said:
| /*
| * smp_locks might be freed after init
| * start/end must be page aligned
| */
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: David Miller <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <1269830604-26214-2-git-send-email-yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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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:
ocfs2: Fix a race in o2dlm lockres mastery
Ocfs2: Handle deletion of reflinked oprhan inodes correctly.
Ocfs2: Journaling i_flags and i_orphaned_slot when adding inode to orphan dir.
ocfs2: Clear undo bits when local alloc is freed
ocfs2: Init meta_ac properly in ocfs2_create_empty_xattr_block.
ocfs2: Fix the update of name_offset when removing xattrs
ocfs2: Always try for maximum bits with new local alloc windows
ocfs2: set i_mode on disk during acl operations
ocfs2: Update i_blocks in reflink operations.
ocfs2: Change bg_chain check for ocfs2_validate_gd_parent.
[PATCH] Skip check for mandatory locks when unlocking
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In o2dlm, the master of a lock resource keeps a map of all interested
nodes. This prevents the master from purging the resource before an
interested node can create a lock.
A race between the mastery thread and the mastery handler allowed an
interested node to discover who the master is without informing the
master directly. This is easily fixed by holding the dlm spinlock a
little longer in the mastery handler.
Signed-off-by: Srinivas Eeda <srinivas.eeda@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
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The rule is that all inodes in the orphan dir have ORPHANED_FL,
otherwise we treated it as an ERROR. This rule works well except
for some rare cases of reflink operation:
http://oss.oracle.com/bugzilla/show_bug.cgi?id=1215
The problem is caused by how reflink and our orphan_scan thread
interact.
* The orphan scan pulls the orphans into a queue first, then runs the
queue at a later time. We only hold the orphan_dir's lock
during scanning.
* Reflink create a oprhaned target in orphan_dir as its first step.
It removes the target and clears the flag as the final step.
These two steps take the orphan_dir's lock, but it is not held for
the duration.
Based on the above semantics, a reflink inode can be moved out of the
orphan dir and have its ORPHANED_FL cleared before the queue of orphans
is run. This leads to a ERROR in ocfs2_query_wipde_inode().
This patch teaches ocfs2_query_wipe_inode() to detect previously
orphaned reflink targets. If a reflink fails or a crash occurs during
the relfink operation, the inode will retain ORPHANED_FL and will be
properly wiped.
Signed-off-by: Tristan Ye <tristan.ye@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
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Currently, some callers were missing to journal the dirty inode after
adding it to orphan dir.
Now we're going to journal such modifications within the ocfs2_orphan_add()
itself, It's safe to do so, though some existing caller may duplicate this,
and it makes the logic look more straightforward anyway.
Signed-off-by: Tristan Ye <tristan.ye@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
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When the local alloc file changes windows, unused bits are freed back to the
global bitmap. By defnition, those bits can not be in use by any file. Also,
the local alloc will never have been able to allocate those bits if they
were part of a previous truncate. Therefore it makes sense that we should
clear unused local alloc bits in the undo buffer so that they can be used
immediatly.
[ Modified to call it ocfs2_release_clusters() -- Joel ]
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
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You can't store a pointer that you haven't filled in yet and expect it
to work.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
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When replacing a xattr's value, in some case we wipe its name/value
first and then re-add it. The wipe is done by
ocfs2_xa_block_wipe_namevalue() when the xattr is in the inode or
block. We currently adjust name_offset for all the entries which have
(offset < name_offset). This does not adjust the entrie we're replacing.
Since we are replacing the entry, we don't adjust the total entry count.
When we calculate a new namevalue location, we trust the entries
now-wrong offset in ocfs2_xa_get_free_start(). The solution is to
also adjust the name_offset for the replaced entry, allowing
ocfs2_xa_get_free_start() to calculate the new namevalue location
correctly.
The following script can trigger a kernel panic easily.
echo 'y'|mkfs.ocfs2 --fs-features=local,xattr -b 4K $DEVICE
mount -t ocfs2 $DEVICE $MNT_DIR
FILE=$MNT_DIR/$RANDOM
for((i=0;i<76;i++))
do
string_76="a$string_76"
done
string_78="aa$string_76"
string_82="aaaa$string_78"
touch $FILE
setfattr -n 'user.test1234567890' -v $string_76 $FILE
setfattr -n 'user.test1234567890' -v $string_78 $FILE
setfattr -n 'user.test1234567890' -v $string_82 $FILE
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
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What we were doing before was to ask for the current window size as the
maximum allocation. This had the effect of limiting the amount of allocation
we could get for the local alloc during times when the window size was
shrunk due to fragmentation. In some cases, that could actually *increase*
fragmentation by artificially limiting the number of bits we can accept. So
while we still want to ask for a minimum number of bits equal to window
size, there is no reason why we should limit the number of bits the local
alloc should accept. Hence always allow the maximum number of local alloc
bits.
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
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ocfs2_set_acl() and ocfs2_init_acl() were setting i_mode on the in-memory
inode, but never setting it on the disk copy. Thus, acls were some times not
getting propagated between nodes. This patch fixes the issue by adding a
helper function ocfs2_acl_set_mode() which does this the right way.
ocfs2_set_acl() and ocfs2_init_acl() are then updated to call
ocfs2_acl_set_mode().
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
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In reflink, we need to upate i_blocks for the target inode.
Reported-by: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
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In ocfs2_validate_gd_parent, we check bg_chain against the
cl_next_free_rec of the dinode. Actually in resize, we have
the chance of bg_chain == cl_next_free_rec. So add some
additional condition check for it.
I also rename paramter "clean_error" to "resize", since the
old one is not clearly enough to indicate that we should only
meet with this case in resize.
btw, the correpsonding bug is
http://oss.oracle.com/bugzilla/show_bug.cgi?id=1230.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
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ocfs2_lock() will skip locks on file which has mode set to 02666. This
is a problem in cases where the mode of the file is changed after a
process has obtained a lock on the file.
ocfs2_lock() should skip the check for mandatory locks when unlocking a
file.
Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (28 commits)
ceph: update discussion list address in MAINTAINERS
ceph: some documentations fixes
ceph: fix use after free on mds __unregister_request
ceph: avoid loaded term 'OSD' in documention
ceph: fix possible double-free of mds request reference
ceph: fix session check on mds reply
ceph: handle kmalloc() failure
ceph: propagate mds session allocation failures to caller
ceph: make write_begin wait propagate ERESTARTSYS
ceph: fix snap rebuild condition
ceph: avoid reopening osd connections when address hasn't changed
ceph: rename r_sent_stamp r_stamp
ceph: fix connection fault con_work reentrancy problem
ceph: prevent dup stale messages to console for restarting mds
ceph: fix pg pool decoding from incremental osdmap update
ceph: fix mds sync() race with completing requests
ceph: only release unused caps with mds requests
ceph: clean up handle_cap_grant, handle_caps wrt session mutex
ceph: fix session locking in handle_caps, ceph_check_caps
ceph: drop unnecessary WARN_ON in caps migration
...
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Signed-off-by: Sage Weil <sage@newdream.net>
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New documentation should have an entry in the 00-INDEX. Correct git
urls.
Signed-off-by: Cheng Renquan <crquan@gmail.com>
Signed-off-by: Sage Weil <sage@newdream.net>
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There was a use after free in __unregister_request that would trigger
whenever the request map held the last reference. This appears to have
triggered an oops during 'umount -f' when requests are being torn down.
Signed-off-by: Sage Weil <sage@newdream.net>
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'OSD' means different things to different people; avoid it here to avoid
confusion.
Signed-off-by: Sage Weil <sage@newdream.net>
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Clear pointer to mds request after dropping the reference to
ensure we don't drop it again, as there is at least one error
path through this function that does not reset fi->last_readdir
to a new value.
Signed-off-by: Sage Weil <sage@newdream.net>
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