- 13 9月, 2014 1 次提交
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由 Christoph Hellwig 提交于
The current GETDEVICELIST implementation is buggy in that it doesn't handle cursors correctly, and in that it returns an error if the server returns NFSERR_NOTSUPP. Given that there is no actual need for GETDEVICELIST, it has various issues and might get removed for NFSv4.2 stop using it in the blocklayout driver, and thus the Linux NFS client as whole. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
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- 11 9月, 2014 9 次提交
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由 Christoph Hellwig 提交于
Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
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由 Christoph Hellwig 提交于
This speads up truncate-heavy workloads like fsx by multiple orders of magnitude. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
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由 Christoph Hellwig 提交于
This allows removing extents from the extent tree especially on truncate operations, and thus fixing reads from truncated and re-extended that previously returned stale data. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
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由 Christoph Hellwig 提交于
Currently the block layout driver tracks extents in three separate data structures: - the two list of pnfs_block_extent structures returned by the server - the list of sectors that were in invalid state but have been written to - a list of pnfs_block_short_extent structures for LAYOUTCOMMIT All of these share the property that they are not only highly inefficient data structures, but also that operations on them are even more inefficient than nessecary. In addition there are various implementation defects like: - using an int to track sectors, causing corruption for large offsets - incorrect normalization of page or block granularity ranges - insufficient error handling - incorrect synchronization as extents can be modified while they are in use This patch replace all three data with a single unified rbtree structure tracking all extents, as well as their in-memory state, although we still need to instance for read-only and read-write extent due to the arcane client side COW feature in the block layouts spec. To fix the problem of extent possibly being modified while in use we make sure to return a copy of the extent for use in the write path - the extent can only be invalidated by a layout recall or return which has to wait until the I/O operations finished due to refcounts on the layout segment. The new extent tree work similar to the schemes used by block based filesystems like XFS or ext4. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
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由 Christoph Hellwig 提交于
The core nfs code handles setting pages uptodate on reads, no need to mess with the pageflags outselves. Also remove a debug function to dump page flags. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
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由 Christoph Hellwig 提交于
Use the new PNFS_READ_WHOLE_PAGE flag to offload read-modify-write handling to core nfs code, and remove a huge chunk of deadlock prone mess from the block layout writeback path. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
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由 Christoph Hellwig 提交于
When we do non-page sized reads we can underflow the extent_length variable and read incorrect data. Fix the extent_length calculation and change to defensive <= checks for the extent length in the read and write path. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
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由 Christoph Hellwig 提交于
Make sure the block queue is plugged when performing pNFS blocklayout I/O. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
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由 Christoph Hellwig 提交于
The Linux VM subsystem can't support block sizes larger than page size for block based filesystems very well. While this can be hacked around to some extent for simple filesystems the read-modify-write cycles required for pnfs block invalid extents are extremly deadlock prone when operating on multiple pages. Reject this case early on instead of pretending to support it (badly). Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
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- 26 6月, 2014 1 次提交
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由 Fabian Frederick 提交于
kcalloc manages count*sizeof overflow. Cc: Trond Myklebust <trond.myklebust@primarydata.com> Cc: linux-nfs@vger.kernel.org Signed-off-by: NFabian Frederick <fabf@skynet.be> Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
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- 25 6月, 2014 3 次提交
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由 Weston Andros Adamson 提交于
Remove duplicate writeverf structure from merge of nfs_pgio_header and nfs_pgio_data and remove writeverf related flags and logic to handle more than one RPC per nfs_pgio_header. Signed-off-by: NWeston Andros Adamson <dros@primarydata.com> Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
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由 Weston Andros Adamson 提交于
struct nfs_pgio_data only exists as a member of nfs_pgio_header, but is passed around everywhere, because there used to be multiple _data structs per _header. Many of these functions then use the _data to find a pointer to the _header. This patch cleans this up by merging the nfs_pgio_data structure into nfs_pgio_header and passing nfs_pgio_header around instead. Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NWeston Andros Adamson <dros@primarydata.com> Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
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由 Weston Andros Adamson 提交于
Rename "verf" to "writeverf" and "pages" to "page_array" to prepare for merge of nfs_pgio_data and nfs_pgio_header. Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NWeston Andros Adamson <dros@primarydata.com> Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
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- 29 5月, 2014 2 次提交
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由 Weston Andros Adamson 提交于
This is a step toward allowing pg_test to inform the the coalescing code to reduce the size of requests so they may fit in whatever scheme the pg_test callback wants to define. For now, just return the size of the request if there is space, or 0 if there is not. This shouldn't change any behavior as it acts the same as when the pg_test functions returned bool. Signed-off-by: NWeston Andros Adamson <dros@primarydata.com> Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
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由 Anna Schumaker 提交于
At this point, the only difference between nfs_read_data and nfs_write_data is the write verifier. Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: NTrond Myklebust <trond.myklebust@primarydata.com>
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- 04 4月, 2014 1 次提交
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由 Johannes Weiner 提交于
The radix tree hole searching code is only used for page cache, for example the readahead code trying to get a a picture of the area surrounding a fault. It sufficed to rely on the radix tree definition of holes, which is "empty tree slot". But this is about to change, though, as shadow page descriptors will be stored in the page cache after the actual pages get evicted from memory. Move the functions over to mm/filemap.c and make them native page cache operations, where they can later be adapted to handle the new definition of "page cache hole". Signed-off-by: NJohannes Weiner <hannes@cmpxchg.org> Reviewed-by: NRik van Riel <riel@redhat.com> Reviewed-by: NMinchan Kim <minchan@kernel.org> Acked-by: NMel Gorman <mgorman@suse.de> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Bob Liu <bob.liu@oracle.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Dave Chinner <david@fromorbit.com> Cc: Greg Thelen <gthelen@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jan Kara <jack@suse.cz> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Luigi Semenzato <semenzato@google.com> Cc: Metin Doslu <metin@citusdata.com> Cc: Michel Lespinasse <walken@google.com> Cc: Ozgun Erdogan <ozgun@citusdata.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Roman Gushchin <klamm@yandex-team.ru> Cc: Ryan Mallon <rmallon@gmail.com> Cc: Tejun Heo <tj@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 24 11月, 2013 2 次提交
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由 Kent Overstreet 提交于
Immutable biovecs are going to require an explicit iterator. To implement immutable bvecs, a later patch is going to add a bi_bvec_done member to this struct; for now, this patch effectively just renames things. Signed-off-by: NKent Overstreet <kmo@daterainc.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: "Ed L. Cashin" <ecashin@coraid.com> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Lars Ellenberg <drbd-dev@lists.linbit.com> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Matthew Wilcox <willy@linux.intel.com> Cc: Geoff Levand <geoff@infradead.org> Cc: Yehuda Sadeh <yehuda@inktank.com> Cc: Sage Weil <sage@inktank.com> Cc: Alex Elder <elder@inktank.com> Cc: ceph-devel@vger.kernel.org Cc: Joshua Morris <josh.h.morris@us.ibm.com> Cc: Philip Kelleher <pjk1939@linux.vnet.ibm.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Neil Brown <neilb@suse.de> Cc: Alasdair Kergon <agk@redhat.com> Cc: Mike Snitzer <snitzer@redhat.com> Cc: dm-devel@redhat.com Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: linux390@de.ibm.com Cc: Boaz Harrosh <bharrosh@panasas.com> Cc: Benny Halevy <bhalevy@tonian.com> Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Nicholas A. Bellinger" <nab@linux-iscsi.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Chris Mason <chris.mason@fusionio.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Andreas Dilger <adilger.kernel@dilger.ca> Cc: Jaegeuk Kim <jaegeuk.kim@samsung.com> Cc: Steven Whitehouse <swhiteho@redhat.com> Cc: Dave Kleikamp <shaggy@kernel.org> Cc: Joern Engel <joern@logfs.org> Cc: Prasad Joshi <prasadjoshi.linux@gmail.com> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: KONISHI Ryusuke <konishi.ryusuke@lab.ntt.co.jp> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Ben Myers <bpm@sgi.com> Cc: xfs@oss.sgi.com Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Guo Chao <yan@linux.vnet.ibm.com> Cc: Tejun Heo <tj@kernel.org> Cc: Asai Thambi S P <asamymuthupa@micron.com> Cc: Selvan Mani <smani@micron.com> Cc: Sam Bradshaw <sbradshaw@micron.com> Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Cc: "Roger Pau Monné" <roger.pau@citrix.com> Cc: Jan Beulich <jbeulich@suse.com> Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Cc: Ian Campbell <Ian.Campbell@citrix.com> Cc: Sebastian Ott <sebott@linux.vnet.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Nitin Gupta <ngupta@vflare.org> Cc: Jerome Marchand <jmarchand@redhat.com> Cc: Joe Perches <joe@perches.com> Cc: Peng Tao <tao.peng@emc.com> Cc: Andy Adamson <andros@netapp.com> Cc: fanchaoting <fanchaoting@cn.fujitsu.com> Cc: Jie Liu <jeff.liu@oracle.com> Cc: Sunil Mushran <sunil.mushran@gmail.com> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Namjae Jeon <namjae.jeon@samsung.com> Cc: Pankaj Kumar <pankaj.km@samsung.com> Cc: Dan Magenheimer <dan.magenheimer@oracle.com> Cc: Mel Gorman <mgorman@suse.de>6
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由 Kent Overstreet 提交于
With immutable biovecs we don't want code accessing bi_io_vec directly - the uses this patch changes weren't incorrect since they all own the bio, but it makes the code harder to audit for no good reason - also, this will help with multipage bvecs later. Signed-off-by: NKent Overstreet <kmo@daterainc.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Chris Mason <chris.mason@fusionio.com> Cc: Jaegeuk Kim <jaegeuk.kim@samsung.com> Cc: Joern Engel <joern@logfs.org> Cc: Prasad Joshi <prasadjoshi.linux@gmail.com> Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
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- 29 6月, 2013 1 次提交
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由 Andy Adamson 提交于
Signed-off-by: NAndy Adamson <andros@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 07 6月, 2013 1 次提交
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由 Trond Myklebust 提交于
This is not strictly needed, since get_deviceinfo is not allowed to return NFS4ERR_ACCESS or NFS4ERR_WRONG_CRED, but lets do it anyway for consistency with other pNFS operations. Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 18 2月, 2013 1 次提交
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由 fanchaoting 提交于
now pnfs client uses block layout, maybe we can remove blocklayoutdriver first. if we umount later, it can cause oops in unset_pnfs_layoutdriver. because nfss->pnfs_curr_ld->clear_layoutdriver is invalid. reproduce it: modprobe blocklayoutdriver mount -t nfs4 -o minorversion=1 pnfsip:/ /mnt/ rmmod blocklayoutdriver umount /mnt then you can see following CPU 0 Pid: 17023, comm: umount.nfs4 Tainted: GF O 3.7.0-rc6-pnfs #1 VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform RIP: 0010:[<ffffffffa04cfe6d>] [<ffffffffa04cfe6d>] unset_pnfs_layoutdriver+0x1d/0x70 [nfsv4] RSP: 0018:ffff8800022d9e48 EFLAGS: 00010286 RAX: ffffffffa04a1b00 RBX: ffff88000b013800 RCX: 0000000000000001 RDX: ffffffff81ae8ee0 RSI: ffff880001ee94b8 RDI: ffff88000b013800 RBP: ffff8800022d9e58 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff880001ee9400 R13: ffff8800105978c0 R14: 00007fff25846c08 R15: 0000000001bba550 FS: 00007f45ae7f0700(0000) GS:ffff880012c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: ffffffffa04a1b38 CR3: 0000000002c0c000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process umount.nfs4 (pid: 17023, threadinfo ffff8800022d8000, task ffff880006e48aa0) Stack: ffff8800105978c0 ffff88000b013800 ffff8800022d9e78 ffffffffa04cd0ce ffff8800022d9e78 ffff88000b013800 ffff8800022d9ea8 ffffffffa04755a7 ffff8800022d9ea8 ffff880002f96400 ffff88000b013800 ffff880002f96400 Call Trace: [<ffffffffa04cd0ce>] nfs4_destroy_server+0x1e/0x30 [nfsv4] [<ffffffffa04755a7>] nfs_free_server+0xb7/0x150 [nfs] [<ffffffffa047d4d5>] nfs_kill_super+0x35/0x40 [nfs] [<ffffffff81178d35>] deactivate_locked_super+0x45/0x70 [<ffffffff8117986a>] deactivate_super+0x4a/0x70 [<ffffffff81193ee2>] mntput_no_expire+0xd2/0x130 [<ffffffff81194d62>] sys_umount+0x72/0xe0 [<ffffffff8154af59>] system_call_fastpath+0x16/0x1b Code: 06 e1 b8 ea ff ff ff eb 9e 0f 1f 44 00 00 55 48 89 e5 53 48 83 ec 08 66 66 66 66 90 48 8b 87 80 03 00 00 48 89 fb 48 85 c0 74 29 <48> 8b 40 38 48 85 c0 74 02 ff d0 48 8b 03 3e ff 48 04 0f 94 c2 RIP [<ffffffffa04cfe6d>] unset_pnfs_layoutdriver+0x1d/0x70 [nfsv4] RSP <ffff8800022d9e48> CR2: ffffffffa04a1b38 ---[ end trace 29f75aaedda058bf ]--- Signed-off-by: fanchaoting<fanchaoting@cn.fujitsu.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org
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- 06 12月, 2012 1 次提交
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由 Trond Myklebust 提交于
Clean up. Gather NFSv4.1 slot definitions in fs/nfs/nfs4session.h. Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 09 10月, 2012 1 次提交
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由 Peng Tao 提交于
For buffer write, block layout client scan inode mapping to find next hole and use offset-to-hole as layoutget length. Object layout client uses offset-to-isize as layoutget length. For direct write, both block layout and object layout use dreq->bytes_left. Signed-off-by: NPeng Tao <tao.peng@emc.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 02 10月, 2012 5 次提交
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由 Trond Myklebust 提交于
Reported-by: NFengguang Wu <fengguang.wu@intel.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Peng Tao 提交于
For DIO writes, if it is not blocksize aligned, we need to do internal serialization. It may slow down writers anyway. So we just bail them out and resend to MDS. Cc: stable <stable@vger.kernel.org> [since v3.4] Signed-off-by: NPeng Tao <tao.peng@emc.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Peng Tao 提交于
For DIO read, if it is not sector aligned, we should reject it and resend via MDS. Otherwise there might be data corruption. Also teach bl_read_pagelist to handle partial page reads for DIO. Cc: stable <stable@vger.kernel.org> [since v3.4] Signed-off-by: NPeng Tao <tao.peng@emc.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Peng Tao 提交于
If applications use flock to protect its write range, generic NFS will not do read-modify-write cycle at page cache level. Therefore LD should know how to handle non-sector aligned writes. Otherwise there will be data corruption. Cc: stable <stable@vger.kernel.org> Signed-off-by: NPeng Tao <tao.peng@emc.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Peng Tao 提交于
This reverts commit 159e0561, in favor of a more complete fix to the alignment issue. Signed-off-by: NPeng Tao <tao.peng@emc.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 29 9月, 2012 1 次提交
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由 Trond Myklebust 提交于
Fix the namespace pollution issue. Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 31 7月, 2012 1 次提交
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由 Peng Tao 提交于
Current block layout driver read/write code assumes page aligned IO in many places. Add a checker to validate the assumption. Otherwise there would be data corruption like when application does open(O_WRONLY) and page unaliged write. Signed-off-by: NPeng Tao <tao.peng@emc.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 28 4月, 2012 2 次提交
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由 Fred Isaman 提交于
Both nfs_read_data and nfs_write_data devote several fields which can be combined into a single shared struct. Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Fred Isaman 提交于
In order to avoid duplicating all the data in nfs_read_data whenever we split it up into multiple RPC calls (either due to a short read result or due to rsize < PAGE_SIZE), we split out the bits that are the same per RPC call into a separate "header" structure. The goal this patch moves towards is to have a single header refcounted by several rpc_data structures. Thus, want to always refer from rpc_data to the header, and not the other way. This patch comes close to that ideal, but the directio code currently needs some special casing, isolated in the nfs_direct_[read_write]hdr_release() functions. This will be dealt with in a future patch. Signed-off-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 27 4月, 2012 1 次提交
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由 Jim Rees 提交于
Signed-off-by: NJim Rees <rees@umich.edu> Suggested-by: NAndy Adamson <andros@netapp.com> Suggested-by: NFred Isaman <iisaman@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 21 3月, 2012 1 次提交
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由 Trond Myklebust 提交于
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 11 3月, 2012 1 次提交
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由 Stanislav Kinsbursky 提交于
This queue is used for sleeping in kernel and it have to be per-net since we don't want to wake any other waiters except in out network nemespace. BTW, move wq to per-net data is easy. But some way to handle upcall timeouts have to be provided. On message destroy in case of timeout, tasks, waiting for message to be delivered, should be awakened. Thus, some data required to located the right wait queue. Chosen solution replaces rpc_pipe_msg object with new introduced bl_pipe_msg object, containing rpc_pipe_msg and proper wq. Signed-off-by: NStanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 01 2月, 2012 4 次提交
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由 Stanislav Kinsbursky 提交于
This is a cleanup patch. We don't need this reference anymore, because blocklayout pipes dentries now creates and destroys in per-net operations and on PipeFS mount/umount notification. Note that nfs4blocklayout_register_net() now returns 0 instead of -ENOENT in case of PipeFS superblock absence. This is ok, because blocklayout pipe dentry will be created on PipeFS mount event. Signed-off-by: NStanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Stanislav Kinsbursky 提交于
This patch subscribes blocklayout pipes to RPC pipefs notifications. Notifier is registering on blocklayout module load. This notifier callback is responsible for creation/destruction of PipeFS blocklayout pipe dentry. Note that no locking required in notifier callback because PipeFS superblock pointer is passed as an argument from it's creation or destruction routine and thus we can be sure about it's validity. Signed-off-by: NStanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Stanislav Kinsbursky 提交于
This patch implements blocklayout pipe creation and registration per each existent network namespace. This was achived by registering NFS per-net operations, responsible for blocklayout pipe allocation/register and unregister/destruction instead of initialization and destruction of static "bl_device_pipe" pipe (this one was removed). Note, than pointer to network blocklayout pipe is stored in per-net "nfs_net" structure, because allocating of one more per-net structure for blocklayout module looks redundant. This patch also changes dev_remove() function prototype (and all it's callers, where it' requied) by adding network namespace pointer parameter, which is used to discover proper blocklayout pipe for rpc_queue_upcall() call. Signed-off-by: NStanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Stanislav Kinsbursky 提交于
This patch makes blocklayout pipe dentry allocated and destroyed in network namespace context by PipeFS network namespace aware routines. Network namespace context is obtained from nfs_client structure. Signed-off-by: NStanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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