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path: root/fs/nfs/blocklayout/blocklayout.h
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* pnfsblock: cleanup nfs4_blkdev_getPeng Tao2012-10-081-1/+0
| | | | | | | | It is not needed at all and it is messing with return values... Reported-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Peng Tao <tao.peng@emc.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfsblock: fix partial page buffer wirtePeng Tao2012-10-011-0/+1
| | | | | | | | | | | 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: Peng Tao <tao.peng@emc.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: replace global bl_wq with per-net oneStanislav Kinsbursky2012-03-111-2/+5
| | | | | | | | | | | | | 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: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: replace global bl_mount_reply with per-net oneStanislav Kinsbursky2012-03-111-5/+0
| | | | | | | | This global variable is used for blocklayout downcall and thus can be corrupted if case of existence of multiple networks namespaces. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: blocklayout pipe creation per network namespace context introducedStanislav Kinsbursky2012-01-311-1/+2
| | | | | | | | | | | | | | | | | | 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: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: split SUNPRC PipeFS dentry and private pipe data creationStanislav Kinsbursky2012-01-311-1/+1
| | | | | | | | | | | | | | This patch is a final step towards to removing PipeFS inode references from kernel code other than PipeFS itself. It makes all kernel SUNRPC PipeFS users depends on pipe private data, which state depend on their specific operations, etc. This patch completes SUNRPC PipeFS preparations and allows to create pipe private data and PipeFS dentries independently. Next step will be making SUNPRC PipeFS dentries allocated by SUNRPC PipeFS network namespace aware routines. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfsblock: alloc short extent before submit bioPeng Tao2012-01-121-1/+8
| | | | | | | | | | | | As discussed earlier, it is better for block client to allocate memory for tracking extents state before submitting bio. So the patch does it by allocating a short_extent for every INVALID extent touched by write pagelist and for every zeroing page we created, saving them in layout header. Then in end_io we can just use them to create commit list items and avoid memory allocation there. Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfsblock: cleanup bl_mark_sectors_initPeng Tao2012-01-121-2/+1
| | | | | | | | | It does not need to manipulate on partial initialized blocks. Writeback code takes care of it. Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC/NFS: make rpc pipe upcall genericPeng Tao2011-10-181-2/+0
| | | | | | | | | | The same function is used by idmap, gss and blocklayout code. Make it generic. Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Jim Rees <rees@umich.edu> Cc: stable@kernel.org [3.0] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfsblock: fix size of upcall messageJim Rees2011-10-181-1/+1
| | | | | | | | | | | | | Make the status field explicitly 32 bits. "...it's unlikely that the kernel and userspace would differ on the size of an int here, but it might be a good idea to go ahead and make that explicitly 32 bits in case we end up dealing with more exotic arches at some point in the future." Suggested-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Cc: stable@kernel.org [3.0] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfsblock: note written INVAL areas for layoutcommitFred Isaman2011-07-311-0/+2
| | | | | | | | | Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfsblock: cleanup_layoutcommitFred Isaman2011-07-311-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In blocklayout driver. There are two things happening while layoutcommit/cleanup. 1. the modified extents are encoded. 2. On cleanup the extents are put back on the layout rw extents list, for reads. In the new system where actual xdr encoding is done in encode_layoutcommit() directly into xdr buffer, these are the new commit stages: 1. On setup_layoutcommit, the range is adjusted as before and a structure is allocated for communication with bl_encode_layoutcommit && bl_cleanup_layoutcommit (Generic layer provides a void-star to hang it on) 2. bl_encode_layoutcommit is called to do the actual encoding directly into xdr. The commit-extent-list is not freed and is stored on above structure. FIXME: The code is not yet converted to the new XDR cleanup 3. On cleanup the commit-extent-list is put back by a call to set_to_rw() as before, but with no need for XDR decoding of the list as before. And the commit-extent-list is freed. Finally allocated structure is freed. [rm inode and pnfs_layout_hdr args from cleanup_layoutcommit()] Signed-off-by: Jim Rees <rees@umich.edu> [pnfsblock: introduce bl_committing list] Signed-off-by: Peng Tao <peng_tao@emc.com> [pnfsblock: SQUASHME: adjust to API change] Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [blocklayout: encode_layoutcommit implementation] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> [pnfsblock: fix bug setting up layoutcommit.] Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn> [pnfsblock: cleanup_layoutcommit wants a status parameter] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfsblock: encode_layoutcommitFred Isaman2011-07-311-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In blocklayout driver. There are two things happening while layoutcommit/cleanup. 1. the modified extents are encoded. 2. On cleanup the extents are put back on the layout rw extents list, for reads. In the new system where actual xdr encoding is done in encode_layoutcommit() directly into xdr buffer, these are the new commit stages: 1. On setup_layoutcommit, the range is adjusted as before and a structure is allocated for communication with bl_encode_layoutcommit && bl_cleanup_layoutcommit (Generic layer provides a void-star to hang it on) 2. bl_encode_layoutcommit is called to do the actual encoding directly into xdr. The commit-extent-list is not freed and is stored on above structure. FIXME: The code is not yet converted to the new XDR cleanup 3. On cleanup the commit-extent-list is put back by a call to set_to_rw() as before, but with no need for XDR decoding of the list as before. And the commit-extent-list is freed. Finally allocated structure is freed. [rm inode and pnfs_layout_hdr args from cleanup_layoutcommit()] [pnfsblock: get rid of deprecated xdr macros] Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [blocklayout: encode_layoutcommit implementation] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> [pnfsblock: fix bug setting up layoutcommit.] Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn> [pnfsblock: prevent commit list corruption] [pnfsblock: fix layoutcommit with an empty opaque] Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfsblock: add extent manipulation functionsFred Isaman2011-07-311-2/+28
| | | | | | | | | | | | | | | Adds working implementations of various support functions to handle INVAL extents, needed by writes, such as bl_mark_sectors_init and bl_is_sector_init. [pnfsblock: fix 64-bit compiler warnings for extent manipulation] Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> [Implement release_inval_marks] Signed-off-by: Zhang Jingwang <zhangjingwang@nrchpc.ac.cn> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfsblock: bl_find_get_extentFred Isaman2011-07-311-0/+3
| | | | | | | | | | | | | | | | | | | | | | Implement bl_find_get_extent(), one of the core extent manipulation routines. [pnfsblock: Lookup list entry of layouts and tags in reverse order] Signed-off-by: Zhang Jingwang <zhangjingwang@nrchpc.ac.cn> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Jim Rees <rees@umich.edu> pnfsblock: fix print format warnings for sector_t and size_t gcc spews warnings about these on x86_64, e.g.: fs/nfs/blocklayout/blocklayout.c:74: warning: format ‘%Lu’ expects type ‘long long unsigned int’, but argument 2 has type ‘sector_t’ fs/nfs/blocklayout/blocklayout.c:388: warning: format ‘%d’ expects type ‘int’, but argument 5 has type ‘size_t’ Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfsblock: call and parse getdevicelistFred Isaman2011-07-311-3/+10
| | | | | | | | | | | | | | | | | | | | | | | Call GETDEVICELIST during mount, then call and parse GETDEVICEINFO for each device returned. [pnfsblock: get rid of deprecated xdr macros] Signed-off-by: Jim Rees <rees@umich.edu> [pnfsblock: fix pnfs_deviceid references] Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [pnfsblock: fix print format warnings for sector_t and size_t] [pnfs-block: #include <linux/vmalloc.h>] [pnfsblock: no PNFS_NFS_SERVER] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [pnfsblock: fix bug determining size of striped volume] [pnfsblock: fix oops when using multiple devices] Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> [pnfsblock: get rid of vmap and deviceid->area structure] Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfsblock: merge extentsFred Isaman2011-07-311-0/+13
| | | | | | | | | | | | | | Replace a stub, so that extents underlying the layouts are properly added, merged, or ignored as necessary. Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [pnfsblock: delete the new node before put it] Signed-off-by: Mingyang Guo <guomingyang@nrchpc.ac.cn> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfsblock: lseg alloc and freeFred Isaman2011-07-311-0/+6
| | | | | | | | | | | Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [pnfsblock: fix bug getting pnfs_layout_type in translate_devid().] Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Zhang Jingwang <Jingwang.Zhang@emc.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfsblock: remove device operationsJim Rees2011-07-311-0/+3
| | | | | | | | | | Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> [upcall bugfixes] Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfsblock: add device operationsJim Rees2011-07-311-0/+40
| | | | | | | | | | Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> [upcall bugfixes] Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfsblock: basic extent codeFred Isaman2011-07-311-0/+1
| | | | | | | | | | | Adds structures and basic create/delete code for extents. Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Zhang Jingwang <Jingwang.Zhang@emc.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfsblock: add blocklayout Kconfig option, Makefile, and stubsFred Isaman2011-07-311-0/+91
Define a configuration variable to enable/disable compilation of the block driver code. Add the minimal structure for a pnfs block layout driver, and empty list-heads that will hold the extent data [pnfsblock: make NFS_V4_1 select PNFS_BLOCK] Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [pnfs-block: fix CONFIG_PNFS_BLOCK dependencies] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> [pnfsblock: SQUASHME: adjust to API change] Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [pnfs: move pnfs_layout_type inline in nfs_inode] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [blocklayout: encode_layoutcommit implementation] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> [pnfsblock: layout alloc and free] Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> [pnfs: move pnfs_layout_type inline in nfs_inode] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Benny Halevy <bhalevy@tonian.com> [pnfsblock: define module alias] Signed-off-by: Peng Tao <peng_tao@emc.com> [rm inode and pnfs_layout_hdr args from cleanup_layoutcommit()] Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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