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* kconfig: Introduce IS_ENABLED(), IS_BUILTIN() and IS_MODULE()Michal Marek2011-07-293-58/+47
| | | | | | | | | | | | | | | | | | | Replace the config_is_*() macros with a variant that allows for grepping for usage of CONFIG_* options in the code. Usage: if (IS_ENABLED(CONFIG_NUMA)) or #if IS_ENABLED(CONFIG_NUMA) The IS_ENABLED() macro evaluates to 1 if the argument is set (to either 'y' or 'm'), IS_BUILTIN() tests if the option is 'y' and IS_MODULE() test if the option is 'm'. Only boolean and tristate options are supported. Reviewed-by: Arnaud Lacombe <lacombar@gmail.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Michal Marek <mmarek@suse.cz>
* xconfig: Abort close if configuration cannot be savedMichal Marek2011-07-252-4/+11
| | | | | | | | Give the user an opportunity to fix the error or save the configuration under a different path. Reported-by: Hiromu Yakura <hiromu1996@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* kconfig: fix missing "0x" prefix from S_HEX symbol in autoconf.hArnaud Lacombe2011-07-181-5/+21
| | | | | | | | | | | | | | | | | | | The specialized printer for headers (espectially autoconf.h) is missing fixup code for S_HEX symbol's "0x" prefix. As long as kconfig does not warn for such missing prefix, this code is needed. Fix this. In the same time, fix some nits in `header_print_symbol()'. Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Broken-by: Arnaud Lacombe <lacombar@gmail.com> Reported-by: Randy Dunlap <rdunlap@xenotime.net> Reported-by: Mauro Carvalho Chehab <mchehab@infradead.org> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Arnaud Lacombe <lacombar@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* kconfig/nconf: remove useless conditionnalArnaud Lacombe2011-07-131-4/+1
| | | | | | | | | | | | | | After the test if (!submenu || ...) continue; the variable `submenu' can _not_ be NULL, so do not test for this situation. Cc: Nir Tzachar <nir.tzachar@gmail.com> Signed-off-by: Arnaud Lacombe <lacombar@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* kconfig/nconf: prevent segfault on empty menuArnaud Lacombe2011-07-131-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | nconf does not check the validity of the current menu when help is requested (with either <F2>, '?' or 'h'). This leads to a NULL pointer dereference when an empty menu is encountered. The following reduced testcase exposes the problem: config DEP bool menu "FOO" config BAR bool "BAR" depends on DEP endmenu Issue will happen when entering menu "FOO" and requesting help. nconf is the only front-end which do not filter the validity of the current menu. Such filter can not really happen beforehand as other key which does not deals with the current menu might be entered by the user, so just bails out earlier if we encounter an invalid menu. Cc: Nir Tzachar <nir.tzachar@gmail.com> Cc: Andrej Gelenberg <andrej.gelenberg@udo.edu> Reported-by: Andrej Gelenberg <andrej.gelenberg@udo.edu> Signed-off-by: Arnaud Lacombe <lacombar@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* kconfig/nconf: use the generic menu_get_ext_help()Arnaud Lacombe2011-07-131-13/+1
| | | | | | | | | | | | | | | | nconf is the only front-end which does not use this helper, but prefer to copy/paste the code. The test wrt. menu validity added in this version of the code is bogus anyway as an invalid menu will get dereferenced a few line below by calling menu_get_prompt(). For now, convert nconf to use menu_get_ext_help(), as do every other front-end. We will deals with menu validity checks properly in a separate commit. Cc: Nir Tzachar <nir.tzachar@gmail.com> Cc: Andrej Gelenberg <andrej.gelenberg@udo.edu> Signed-off-by: Arnaud Lacombe <lacombar@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* nconfig: Avoid Wunused-but-set warningRaghavendra D Prabhu2011-07-131-2/+0
| | | | | | | | | I am seeing Wunused-but-set warning while make nconfig. Looks like active_menu is not used. Removing it fixes the warning. Signed-off-by: Raghavendra D Prabhu <rprabhu@wnohang.net> Acked-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* Merge branch 'kconfig-trivial' of git://github.com/lacombar/linux-2.6 into ↵Michal Marek2011-07-043-22/+39
|\ | | | | | | kbuild/kconfig
| * kconfig/conf: mark xfgets() privateArnaud Lacombe2011-07-022-7/+3
| | | | | | | | | | | | | | This function has not much reason to be public. In the mean time, convert declaration from K&R C to ISO C. Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
| * kconfig: remove pending prototypes for kconfig_load()Arnaud Lacombe2011-07-021-3/+0
| | | | | | | | | | | | | | Commit 5a6f8d2bd9e3392569ed6f29ea4d7210652f929b removed `kconfig_load()', however, it missed an hidden prototypes in `lkc.h'. Fix this. Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
| * kconfig/conf: add command line options' descriptionArnaud Lacombe2011-07-021-1/+31
| | | | | | | | Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
| * kconfig/conf: reduce the scope of `defconfig_file'Arnaud Lacombe2011-07-021-3/+1
| | | | | | | | | | | | | | | | | | | | This variable is not used outside of main() so there is not much reason keeping it global. Ensure it is initialized as gcc has no way to know that normal execution path expect only one option switch to be given on the command line (except when we request help). As a result, we always initialize `defconfig_file' before using it. Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
| * kconfig: use calloc() for expr allocationArnaud Lacombe2011-07-021-8/+4
| | | | | | | | Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
* | kconfig: introduce specialized printerArnaud Lacombe2011-07-014-128/+266
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make conf_write_symbol() grammar agnostic to be able to use it from different code path. These path pass a printer callback which will print a symbol's name and its value in different format. conf_write_symbol()'s job become mostly only to prepare a string for the printer. This avoid to have to pass specialized flag to generic functions Signed-off-by: Arnaud Lacombe <lacombar@gmail.com> [mmarek: rebased on top of de12518 (kconfig: autogenerated config_is_xxx macro)] Signed-off-by: Michal Marek <mmarek@suse.cz>
* | kconfig: do not overwrite symbol direct dependency in assignmentArnaud Lacombe2011-06-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Considering the following configuration: config F bool "F" choice AB bool "AB" config A bool "A" config B bool "B" endchoice if A config D bool default y if F select E config E bool "E" endif if B config D bool default y if F select E config E bool "E" endif The following configuration: CONFIG_F=y CONFIG_A=y # CONFIG_B is not set CONFIG_D=y CONFIG_E=y emits a spurious warning: (D) selects E which has unmet direct dependencies (B) If a symbol appears in two different branch of the tree, it should inherit the dependency of both parent, not just the last one. Reported-by: Yann E. Morin <yann.morin.1998@anciens.enib.fr> Tested-by: Yann E. Morin <yann.morin.1998@anciens.enib.fr> Signed-off-by: Arnaud Lacombe <lacombar@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* | Merge branch 'kconfig-trivial' of git://github.com/lacombar/linux-2.6 into ↵Michal Marek2011-06-0819-112/+26
|\| | | | | | | kbuild/kconfig
| * kconfig/gconf: silent missing prototype warningsArnaud Lacombe2011-06-061-1/+2
| | | | | | | | | | | | | | As the `gconf' frontend is un-maintained, go the easy way by silencing the "warning: no previous prototype for '<fn>'" warnings. Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
| * kconfig/gconf: kill deadcodeArnaud Lacombe2011-06-061-33/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The only call site of renderer_toggled() has been commented out since Apr. 2003, as per Linus' Linux history repository: commit e7f67eb3c0570aa50c1cc0707b478a6d93bdc255 Author: Roman Zippel <zippel@linux-m68k.org> Date: Fri Apr 4 04:18:05 2003 -0800 [PATCH] gconf update A gconf update by Romain Li<C3><A9>vin <roms@tilp.info> - fixed bug when double-clicking for changing value. - expand row when enabling a row with a submenu. - various bug fixes As this result in a warning: scripts/kconfig/gconf.c:891:13: warning: 'renderer_toggled' defined but not used just nuke that code. Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
| * kconfig: nuke LKC_DIRECT_LINK cruftArnaud Lacombe2011-06-0617-76/+9
| | | | | | | | | | | | | | This interface is not (and has never been ?) used by any frontend, just get rid of it. Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
| * kconfig: nuke reference to SWIGArnaud Lacombe2011-06-061-3/+0
| | | | | | | | | | | | | | SWIG is not used (yet?) to create kconfig binding, so there is no point referencing it. Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
| * kconfig: add missing <stdlib.h> inclusionArnaud Lacombe2011-06-061-0/+1
| | | | | | | | | | | | This header is needed when using {m,re}alloc(3) and free(3) function family. Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
| * kconfig: add missing <ctype.h> inclusionArnaud Lacombe2011-06-061-0/+1
| | | | | | | | | | | | This header is needed when using isspace(3) function family. Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
| * kconfig: add missing <stdarg.h> inclusionArnaud Lacombe2011-06-063-0/+3
| | | | | | | | | | | | This header is needed when using va_{start,end,copy}(3) functions family. Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
| * kconfig: fix return code for invalid boolean symbol in conf_set_sym_val()Arnaud Lacombe2011-06-061-1/+1
| | | | | | | | | | Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
| * kconfig: annotate non-trivial fall-troughArnaud Lacombe2011-06-064-0/+11
| | | | | | | | Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
* | Merge commit 'v3.0-rc1' into kbuild/kconfigMichal Marek2011-06-089471-390964/+476448
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| * Linux 3.0-rc1v3.0-rc1Linus Torvalds2011-05-291-5/+5
| | | | | | | | | | | | | | | | | | | | .. except there are various scripts that really know that there are three numbers, so it calls itself "3.0.0-rc1". Hopefully by the time the final 3.0 is out, we'll have that extra zero all figured out. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * Merge branch 'for-linus' of ↵Linus Torvalds2011-05-296-263/+220
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6: eCryptfs: Remove ecryptfs_header_cache_2 eCryptfs: Cleanup and optimize ecryptfs_lookup_interpose() eCryptfs: Return useful code from contains_ecryptfs_marker eCryptfs: Fix new inode race condition eCryptfs: Cleanup inode initialization code eCryptfs: Consolidate inode functions into inode.c
| | * eCryptfs: Remove ecryptfs_header_cache_2Tyler Hicks2011-05-293-13/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | Now that ecryptfs_lookup_interpose() is no longer using ecryptfs_header_cache_2 to read in metadata, the kmem_cache can be removed and the ecryptfs_header_cache_1 kmem_cache can be renamed to ecryptfs_header_cache. Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
| | * eCryptfs: Cleanup and optimize ecryptfs_lookup_interpose()Tyler Hicks2011-05-293-105/+88
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ecryptfs_lookup_interpose() has turned into spaghetti code over the years. This is an effort to clean it up. - Shorten overly descriptive variable names such as ecryptfs_dentry - Simplify gotos and error paths - Create helper function for reading plaintext i_size from metadata It also includes an optimization when reading i_size from the metadata. A complete page-sized kmem_cache_alloc() was being done to read in 16 bytes of metadata. The buffer for that is now statically declared. Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
| | * eCryptfs: Return useful code from contains_ecryptfs_markerTyler Hicks2011-05-291-16/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of having the calling functions translate the true/false return code to either 0 or -EINVAL, have contains_ecryptfs_marker() return 0 or -EINVAL so that the calling functions can just reuse the return code. Also, rename the function to ecryptfs_validate_marker() to avoid callers mistakenly thinking that it returns true/false codes. Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
| | * eCryptfs: Fix new inode race conditionTyler Hicks2011-05-295-28/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Only unlock and d_add() new inodes after the plaintext inode size has been read from the lower filesystem. This fixes a race condition that was sometimes seen during a multi-job kernel build in an eCryptfs mount. https://bugzilla.kernel.org/show_bug.cgi?id=36002 Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com> Reported-by: David <david@unsolicited.net> Tested-by: David <david@unsolicited.net>
| | * eCryptfs: Cleanup inode initialization codeTyler Hicks2011-05-292-68/+69
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The eCryptfs inode get, initialization, and dentry interposition code has two separate paths. One is for when dentry interposition is needed after doing things like a mkdir in the lower filesystem and the other is needed after a lookup. Unlocking new inodes and doing a d_add() needs to happen at different times, depending on which type of dentry interposing is being done. This patch cleans up the inode get and initialization code paths and splits them up so that the locking and d_add() differences mentioned above can be handled appropriately in a later patch. Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com> Tested-by: David <david@unsolicited.net>
| | * eCryptfs: Consolidate inode functions into inode.cTyler Hicks2011-05-294-107/+91
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These functions should live in inode.c since their focus is on inodes and they're primarily used by functions in inode.c. Also does a simple cleanup of ecryptfs_inode_test() and rolls ecryptfs_init_inode() into ecryptfs_inode_set(). Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com> Tested-by: David <david@unsolicited.net>
| * | Merge branch 'pnfs-submit' of git://git.open-osd.org/linux-open-osdLinus Torvalds2011-05-2932-279/+3907
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'pnfs-submit' of git://git.open-osd.org/linux-open-osd: (32 commits) pnfs-obj: pg_test check for max_io_size NFSv4.1: define nfs_generic_pg_test NFSv4.1: use pnfs_generic_pg_test directly by layout driver NFSv4.1: change pg_test return type to bool NFSv4.1: unify pnfs_pageio_init functions pnfs-obj: objlayout_encode_layoutcommit implementation pnfs: encode_layoutcommit pnfs-obj: report errors and .encode_layoutreturn Implementation. pnfs: encode_layoutreturn pnfs: layoutret_on_setattr pnfs: layoutreturn pnfs-obj: osd raid engine read/write implementation pnfs: support for non-rpc layout drivers pnfs-obj: define per-inode private structure pnfs: alloc and free layout_hdr layoutdriver methods pnfs-obj: objio_osd device information retrieval and caching pnfs-obj: decode layout, alloc/free lseg pnfs-obj: pnfs_osd XDR client implementation pnfs-obj: pnfs_osd XDR definitions pnfs-obj: objlayoutdriver module skeleton ...
| | * | pnfs-obj: pg_test check for max_io_sizeBoaz Harrosh2011-05-291-1/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement pg_test vector to test for max IO sizes. We calculate a max_io_size member only once, and cache it in lseg so to not do so on every page insert. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> [simplify logic] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
| | * | NFSv4.1: define nfs_generic_pg_testBoaz Harrosh2011-05-291-24/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By default, unless pnfs is used coalesce pages until pg_bsize (rsize or wsize) is reached. pnfs layout drivers define their own pg_test methods that use pnfs_generic_pg_test and need to define their own I/O size limits (e.g. based on the file stripe size). [Move a check from nfs_pageio_do_add_request to nfs_generic_pg_test] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
| | * | NFSv4.1: use pnfs_generic_pg_test directly by layout driverBenny Halevy2011-05-294-19/+17
| | | | | | | | | | | | | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com>
| | * | NFSv4.1: change pg_test return type to boolBenny Halevy2011-05-296-23/+22
| | | | | | | | | | | | | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com>
| | * | NFSv4.1: unify pnfs_pageio_init functionsBenny Halevy2011-05-295-54/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use common code for pnfs_pageio_init_{read,write} and use a common generic pg_test function. Note that this function always assumes the the layout driver's pg_test method is implemented. [Fix BUG] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
| | * | pnfs-obj: objlayout_encode_layoutcommit implementationBoaz Harrosh2011-05-293-0/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Define API for io-engines to report delta_space_used in IOs * Encode the osd-layout specific information of the layoutcommit XDR buffer. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
| | * | pnfs: encode_layoutcommitBenny Halevy2011-05-292-3/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a layout driver method to encode the layout type specific opaque part of layout commit in-line in the xdr stream. Currently, the pnfs-objects layout driver uses it to encode metadata hints to the MDS and the blocks layout driver to commit provisionally allocated extents to the file. Signed-off-by: Benny Halevy <bhalevy@panasas.com>
| | * | pnfs-obj: report errors and .encode_layoutreturn Implementation.Boaz Harrosh2011-05-293-2/+297
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | An io_state pre-allocates an error information structure for each possible osd-device that might error during IO. When IO is done if all was well the io_state is freed. (as today). If the I/O has ended with an error, the io_state is queued on a per-layout err_list. When eventually encode_layoutreturn() is called, each error is properly encoded on the XDR buffer and only then the io_state is removed from err_list and de-allocated. It is up to the io_engine to fill in the segment that fault and the type of osd_error that occurred. By calling objlayout_io_set_result() for each failing device. In objio_osd: * Allocate io-error descriptors space as part of io_state * Use generic objlayout error reporting at end of io. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
| | * | pnfs: encode_layoutreturnAndy Adamson2011-05-292-2/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a layout driver method to encode the layout type specific opaque part of layout return in-line in the xdr stream. Currently the pnfs-objects layout driver uses it to encode i/o error information on LAYOUTRETURN. Signed-off-by: Andy Adamson <andros@netapp.com> [fixup layout header pointer for encode_layoutreturn] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
| | * | pnfs: layoutret_on_setattrBenny Halevy2011-05-293-0/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the objects layout security model, we have object capabilities that are associated with the layout and we anticipate that the server will issue a cb_layoutrecall for any setattr that changes security related attributes (user/group/mode/acl) or truncates the file. Therefore, the layout is returned before issuing the setattr to avoid the anticipated cb_layoutrecall. Signed-off-by: Benny Halevy <bhalevy@panasas.com>
| | * | pnfs: layoutreturnBenny Halevy2011-05-297-7/+274
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | NFSv4.1 LAYOUTRETURN implementation Currently, does not support layout-type payload encoding. Signed-off-by: Alexandros Batsakis <batsakis@netapp.com> Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Marc Eshel <eshel@almaden.ibm.com> Signed-off-by: Zhang Jingwang <zhangjingwang@nrchpc.ac.cn> [call pnfs_return_layout right before pnfs_destroy_layout] [remove assert_spin_locked from pnfs_clear_lseg_list] [remove wait parameter from the layoutreturn path.] [remove return_type field from nfs4_layoutreturn_args] [remove range from nfs4_layoutreturn_args] [no need to send layoutcommit from _pnfs_return_layout] [don't wait on sync layoutreturn] [fix layout stateid in layoutreturn args] [fixed NULL deref in _pnfs_return_layout] [removed recaim member of nfs4_layoutreturn_args] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
| | * | pnfs-obj: osd raid engine read/write implementationBoaz Harrosh2011-05-293-0/+901
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the use of the in-kernel osd library. Implement read/write of data from/to osd-objects according to information specified in the objects-layout. Support for stripping over mirrors with a received stripe_unit. There are however a few constrains which are not supported: 1. Stripe Unit must be a multiple of PAGE_SIZE 2. stripe length (stripe_unit * number_of_stripes) can not be bigger then 32bit. Also support raid-groups and partial-layout. Partial-layout is when not all the groups are received on the line, addressing only a partial range of the file. TODO: Only raid0! raid 4/5/6 support will come at later stage A none supported layout will send IO through the MDS [Important fallout from the last rebase] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> [gfp_flags] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
| | * | pnfs: support for non-rpc layout driversBenny Halevy2011-05-295-4/+62
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Non-rpc layout driver such as for objects and blocks implement their own I/O path and error handling logic. Therefore bypass NFS-based error handling for these layout drivers. [fix lseg ref-count bugs, and null de-refs] [Fall out from: non-rpc layout drivers] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> [get rid of PNFS_USE_RPC_CODE] [get rid of __nfs4_write_done_cb] [revert useless change in nfs4_write_done_cb] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
| | * | pnfs-obj: define per-inode private structureBenny Halevy2011-05-293-0/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | allocate and deallocate per-inode private pnfs_layout_hdr in preparation for I/O implementation. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
| | * | pnfs: alloc and free layout_hdr layoutdriver methodsBenny Halevy2011-05-292-3/+22
| | | | | | | | | | | | | | | | | | | | [gfp_flags] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
generated by cgit (git 2.34.1) at 2025-02-28 18:09:17 +0000