Konrad Rzeszutek Wilk [Thu, 16 Aug 2012 20:38:55 +0000 (16:38 -0400)]
xen/p2m: When revectoring deal with holes in the P2M array.
When we free the PFNs and then subsequently populate them back
during bootup:
Freeing 20000-20200 pfn range: 512 pages freed
1-1 mapping on 20000->20200
Freeing 40000-40200 pfn range: 512 pages freed
1-1 mapping on 40000->40200
Freeing bad80-badf4 pfn range: 116 pages freed
1-1 mapping on bad80->badf4
Freeing badf6-bae7f pfn range: 137 pages freed
1-1 mapping on badf6->bae7f
Freeing bb000-100000 pfn range: 282624 pages freed
1-1 mapping on bb000->100000
Released 283999 pages of unused memory
Set 283999 page(s) to 1-1 mapping
Populating 1acb8a-1f20e9 pfn range: 283999 pages added
We end up having the P2M array (that is the one that was
grafted on the P2M tree) filled with IDENTITY_FRAME or
INVALID_P2M_ENTRY) entries. The patch titled
"xen/p2m: Reuse existing P2M leafs if they are filled with 1:1 PFNs or INVALID."
recycles said slots and replaces the P2M tree leaf's with
&mfn_list[xx] with p2m_identity or p2m_missing.
And re-uses the P2M array sections for other P2M tree leaf's.
For the above mentioned bootup excerpt, the PFNs at
0x20000->0x20200 are going to be IDENTITY based:
P2M[0][256][0] -> P2M[0][257][0] get turned in IDENTITY_FRAME.
We can re-use that and replace P2M[0][256] to point to p2m_identity.
The "old" page (the grafted P2M array provided by Xen) that was at
P2M[0][256] gets put somewhere else. Specifically at P2M[6][358],
b/c when we populate back:
we fill P2M[6][358][0] (and P2M[6][358], P2M[6][359], ...) with
the new MFNs.
That is all OK, except when we revector we assume that the PFN
count would be the same in the grafted P2M array and in the
newly allocated. Since that is no longer the case, as we have
holes in the P2M that point to p2m_missing or p2m_identity we
have to take that into account.
[v2: Check for overflow]
[v3: Move within the __va check]
[v4: Fix the computation] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
(cherry picked from commit 3fc509fc0c590900568ef516a37101d88f3476f5)
Andrew Vasquez [Fri, 31 Aug 2012 04:54:20 +0000 (21:54 -0700)]
qla2xxx: Correct loop_id_map allocation-size and usage.
Bugdb: 13653
Original code incorrectly assigned LOOPID_MAP_SIZE to be the
allocation size in bytes rather than total bit size.
Additionally corrected code to check for bit-allocation failure
in qla2x00_find_new_loop_id().
Mike Christie [Sat, 2 Jun 2012 23:29:45 +0000 (00:29 +0100)]
dm mpath: delay retry of bypassed pg
Orabug: 14478983
If I/O needs retrying and only bypassed priority groups are available,
set the pg_init_delay_retry flag to wait before retrying.
If, for example, the reason for the bypass is that the controller is
getting reset or there is a firmware upgrade happening, retrying right
away would cause a flood of log messages and retries for what could be a
few seconds or even several minutes.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Acked-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
John Soni Jose [Thu, 23 Aug 2012 09:07:23 +0000 (14:37 +0530)]
be2iscsi: Fix a kernel panic because of TCP RST/FIN received.
A TCP RST/FIN can be received even before the connection specific
structures are initialized.This fix checks for the conn structure
is intialized or not when RST/FIN is received.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
John Soni Jose [Thu, 23 Aug 2012 09:02:08 +0000 (14:32 +0530)]
be2iscsi: Format the MAC_ADDR with sysfs_format_mac.
The MAC_ADDR stored in driver private structure is of
unsigned char data type but strlcpy parameters is of
signed char data type. This conversion of data types
lead to change in the value.This changed value is passed
to the upper layer and junk characters were displayed
when "iscsiadm -m iface" command was run.
In case of iSCSI boot, since the the MAC_ADDR was coming
junk the boot was also not working
Patch submitted to upstream kernel
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
John Soni Jose [Thu, 23 Aug 2012 08:55:33 +0000 (14:25 +0530)]
be2iscsi: Issue MBX Cmd for login to boot target in crashdump mode
When the driver comes up in crashdump mode, it has to explicitly
issue command to FW for logging to the boot target. This fix issues
MBX Cmd to login to boot target in crashdump mode.
Patch Submitted to upstream kernel.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
John Soni Jose [Thu, 23 Aug 2012 08:51:08 +0000 (14:21 +0530)]
be2iscsi: Removing the iscsi_data_pdu setting.
The setting of iscsi_data_pdu is not required anymore,
as this was required for BE1 adapters only. The BE1 adapter
were not supported in any previous versions of the kernel.
Patch Submitted to upstream kernel.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
This patch should go into 3.5 fixes. The bug was added in the
patches for the 3.5 feature window.
As you can see from the patch I made a mistake. During
development I switched from passing a struct to the size of
the struct, but left the sizeof. This results in us allocating
4 bytes (sizeof(int)) but then calling pci_free_consistent
with the size of the struct.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com> Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Maxim Uvarov [Wed, 29 Aug 2012 14:08:14 +0000 (07:08 -0700)]
x86/nmi: Clean up register_nmi_handler() usage
Implement a cleaner and easier to maintain version for the section
warning fixes implemented in commit eeaaa96a3a21
("x86/nmi: Fix section mismatch warnings on 32-bit").
Li Zhong [Thu, 29 Mar 2012 20:11:17 +0000 (16:11 -0400)]
x86/nmi: Fix page faults by nmiaction if kmemcheck is enabled
This patch tries to fix the problem of page fault exception
caused by accessing nmiaction structure in nmi if kmemcheck
is enabled.
If kmemcheck is enabled, the memory allocated through slab are
in pages that are marked non-present, so that some checks could
be done in the page fault handling code ( e.g. whether the
memory is read before written to ).
As nmiaction is allocated in this way, so it resides in a
non-present page. Then there is a page fault while the nmi code
accessing the nmiaction structure, which would then cause a
warning by WARN_ON_ONCE(in_nmi()) in kmemcheck_fault(), called
by do_page_fault().
This significantly simplifies the code as well, as the whole
dynamic allocation dance goes away.
v2: as Peter suggested, changed the nmiaction to use static
storage.
v3: as Peter suggested, use macro to shorten the codes. Also
keep the original usage of register_nmi_handler, so users of
this call doesn't need change.
Tested-by: Seiji Aguchi <seiji.aguchi@hds.com> Fixes: https://lkml.org/lkml/2012/3/2/356 Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com>
[ simplified the wrappers ] Signed-off-by: Don Zickus <dzickus@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: thomas.mingarelli@hp.com Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/1333051877-15755-4-git-send-email-dzickus@redhat.com
[ tidied the patch a bit ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
Maxim Uvarov [Wed, 29 Aug 2012 13:14:04 +0000 (06:14 -0700)]
[hpwdt] add include NMI
Commit:
x86/nmi: Add new NMI queues to deal with IO_CHK and SERR
Added new NMI calls. But skipped to add nmi.h. Fix
merge commit here. Signed-off-by: Maxim Uvarov <maxim.uvarov@oracle.com>
Parav Pandit [Wed, 29 Aug 2012 13:06:04 +0000 (06:06 -0700)]
be2net: Add functionality to support RoCE driver
- Increase MSI-X vectors by 5 for RoCE traffic.
- Add macro to check roce support on a device.
- Add device-specific doorbell and MSI-X vector fields shared with NIC
functionality.
- Provide RoCE driver registration and deregistration functions.
- Add support functions which will be invoked on adapter add/remove
and port up/down events.
- Traverse through the list of adapters to invoke callback functions.
Signed-off-by: Parav Pandit <parav.pandit@emulex.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Roland Dreier <roland@purestorage.com>
Luis Henriques [Wed, 11 Jul 2012 21:02:10 +0000 (14:02 -0700)]
ocfs2: fix NULL pointer dereference in __ocfs2_change_file_space()
As ocfs2_fallocate() will invoke __ocfs2_change_file_space() with a NULL
as the first parameter (file), it may trigger a NULL pointer dereferrence
due to a missing check.
Jan Kara [Fri, 10 Feb 2012 09:50:07 +0000 (10:50 +0100)]
ocfs2: Fix bogus error message from ocfs2_global_read_info
'status' variable in ocfs2_global_read_info() is always != 0 when leaving the
function because it happens to contain number of read bytes. Thus we always log
error message although everything is OK. Since all error cases properly call
mlog_errno() before jumping to out_err, there's no reason to call mlog_errno()
on exit at all. This is a fallout of c1e8d35e (conversion of mlog_exit()
calls).
Al Viro [Thu, 3 May 2012 14:14:29 +0000 (10:14 -0400)]
ocfs: simplify symlink handling
seeing that "fast" symlinks still get allocation + copy, we might as
well simply switch them to pagecache-based variant of ->follow_link();
just need an appropriate ->readpage() for them...
Al Viro [Thu, 12 Apr 2012 23:58:53 +0000 (19:58 -0400)]
ocfs2: kill endianness abuses in blockcheck.c
ocfs2_block_check is for little-endian contents; if we just want to
its fields converted to host-endian in a couple of functions, just
put those values into local u32 and u16...
Al Viro [Mon, 13 Feb 2012 02:00:05 +0000 (21:00 -0500)]
ocfs2: deal with wraparounds of i_nlink in ocfs2_rename()
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...
Akinobu Mita [Tue, 15 Nov 2011 22:56:34 +0000 (14:56 -0800)]
ocfs2: avoid unaligned access to dqc_bitmap
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>
(cherry picked from commit 939255798a468e1a92f03546de6e87be7b491e57)
Jan Kara [Mon, 7 Nov 2011 23:20:39 +0000 (00:20 +0100)]
ocfs2: Use filemap_write_and_wait() instead of write_inode_now()
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...
Mark Fasheh [Wed, 16 Nov 2011 20:03:10 +0000 (12:03 -0800)]
ocfs2: honor O_(D)SYNC flag in fallocate
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>
(cherry picked from commit df295d4a4b3c98af1a2445a82aef169e7e5d96b8)
Xiaowei.Hu [Wed, 19 Oct 2011 01:34:19 +0000 (09:34 +0800)]
ocfs2: Add a missing journal credit in ocfs2_link_credits() -v2
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>
(cherry picked from commit 0393afea31874947b1d149b82d17b7dccac4f210)
Wengang Wang [Wed, 12 Oct 2011 07:22:15 +0000 (15:22 +0800)]
ocfs2: Commit transactions in error cases -v2
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>
(cherry picked from commit b8a0ae579fb8d9b21008ac386be08b9428902455)
Wengang Wang [Tue, 12 Jul 2011 08:43:14 +0000 (16:43 +0800)]
ocfs2: make direntry invalid when deleting it
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>
(cherry picked from commit 8298524803339a9a8df053ebdfebc2975ec55be9)
Julia Lawall [Sat, 9 Jul 2011 16:04:39 +0000 (18:04 +0200)]
fs/ocfs2/dlm/dlmlock.c: free kmem_cache_zalloc'd data using kmem_cache_free
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>
(cherry picked from commit fc9f899483435935c1cd7005df29681929d1c99b)
Wengang Wang [Sun, 24 Jul 2011 17:36:54 +0000 (10:36 -0700)]
ocfs2: Fix ocfs2_page_mkwrite()
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>
(cherry picked from commit 5cffff9e29866a3de98c2c25135b3199491f93b0)
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