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2011-05-199p: Kill unused variable 'ret' in trans_rdma.c:parse_opts()David S. Miller1-2/+0
Probably just cut and pasted from the other parse_opts() implementations in the 9p sources. Signed-off-by: David S. Miller <[email protected]>
2011-05-199p: Kill set but not used variable 'ret' in parse_opts()David S. Miller1-2/+0
Signed-off-by: David S. Miller <[email protected]>
2011-05-19Revert "rcu: Decrease memory-barrier usage based on semi-formal proof"Paul E. McKenney5-73/+102
This reverts commit e59fb3120becfb36b22ddb8bd27d065d3cdca499. This reversion was due to (extreme) boot-time slowdowns on SPARC seen by Yinghai Lu and on x86 by Ingo . This is a non-trivial reversion due to intervening commits. Conflicts: Documentation/RCU/trace.txt kernel/rcutree.c Signed-off-by: Ingo Molnar <[email protected]>
2011-05-19list: remove prefetching from regular list iteratorsLinus Torvalds2-18/+14
This is removes the use of software prefetching from the regular list iterators. We don't want it. If you do want to prefetch in some iterator of yours, go right ahead. Just don't expect the iterator to do it, since normally the downsides are bigger than the upsides. It also replaces <linux/prefetch.h> with <linux/const.h>, because the use of LIST_POISON ends up needing it. <linux/poison.h> is sadly not self-contained, and including prefetch.h just happened to hide that. Suggested by David Miller (networking has a lot of regular lists that are often empty or a single entry, and prefetching is not going to do anything but add useless instructions). Acked-by: Ingo Molnar <[email protected]> Acked-by: David S. Miller <[email protected]> Cc: [email protected] Signed-off-by: Linus Torvalds <[email protected]>
2011-05-19ipconfig wait for carrierMicha Nelissen1-13/+22
v3 -> v4: fix return boolean false instead of 0 for ic_is_init_dev Currently the ip auto configuration has a hardcoded delay of 1 second. When (ethernet) link takes longer to come up (e.g. more than 3 seconds), nfs root may not be found. Remove the hardcoded delay, and wait for carrier on at least one network device. Signed-off-by: Micha Nelissen <[email protected]> Cc: David Miller <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-05-19SCTP: fix race between sctp_bind_addr_free() and sctp_bind_addr_conflict()Jacek Luczak1-6/+4
During the sctp_close() call, we do not use rcu primitives to destroy the address list attached to the endpoint. At the same time, we do the removal of addresses from this list before attempting to remove the socket from the port hash As a result, it is possible for another process to find the socket in the port hash that is in the process of being closed. It then proceeds to traverse the address list to find the conflict, only to have that address list suddenly disappear without rcu() critical section. Fix issue by closing address list removal inside RCU critical section. Race can result in a kernel crash with general protection fault or kernel NULL pointer dereference: kernel: general protection fault: 0000 [#1] SMP kernel: RIP: 0010:[<ffffffffa02f3dde>] [<ffffffffa02f3dde>] sctp_bind_addr_conflict+0x64/0x82 [sctp] kernel: Call Trace: kernel: [<ffffffffa02f415f>] ? sctp_get_port_local+0x17b/0x2a3 [sctp] kernel: [<ffffffffa02f3d45>] ? sctp_bind_addr_match+0x33/0x68 [sctp] kernel: [<ffffffffa02f4416>] ? sctp_do_bind+0xd3/0x141 [sctp] kernel: [<ffffffffa02f5030>] ? sctp_bindx_add+0x4d/0x8e [sctp] kernel: [<ffffffffa02f5183>] ? sctp_setsockopt_bindx+0x112/0x4a4 [sctp] kernel: [<ffffffff81089e82>] ? generic_file_aio_write+0x7f/0x9b kernel: [<ffffffffa02f763e>] ? sctp_setsockopt+0x14f/0xfee [sctp] kernel: [<ffffffff810c11fb>] ? do_sync_write+0xab/0xeb kernel: [<ffffffff810e82ab>] ? fsnotify+0x239/0x282 kernel: [<ffffffff810c2462>] ? alloc_file+0x18/0xb1 kernel: [<ffffffff8134a0b1>] ? compat_sys_setsockopt+0x1a5/0x1d9 kernel: [<ffffffff8134aaf1>] ? compat_sys_socketcall+0x143/0x1a4 kernel: [<ffffffff810467dc>] ? sysenter_dispatch+0x7/0x32 Signed-off-by: Jacek Luczak <[email protected]> Acked-by: Vlad Yasevich <[email protected]> CC: Eric Dumazet <[email protected]> Reviewed-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-05-19hlist: remove software prefetching in hlist iteratorsLinus Torvalds2-10/+9
They not only increase the code footprint, they actually make things slower rather than faster. On internationally acclaimed benchmarks ("make -j16" on an already fully built kernel source tree) the hlist prefetching slows down the build by up to 1%. (Almost all of it comes from hlist_for_each_entry_rcu() as used by avc_has_perm_noaudit(), which is very hot due to all the pathname lookups to see if there is anything to do). The cause seems to be two-fold: - on at least some Intel cores, prefetch(NULL) ends up with some microarchitectural stall due to the TLB miss that it incurs. The hlist case triggers this very commonly, since the NULL pointer is the last entry in the list. - the prefetch appears to cause more D$ activity, probably because it prefetches hash list entries that are never actually used (because we ended the search early due to a hit). Regardless, the numbers clearly say that the implicit prefetching is simply a bad idea. If some _particular_ user of the hlist iterators wants to prefetch the next list entry, they can do so themselves explicitly, rather than depend on all list iterators doing so implicitly. Acked-by: Ingo Molnar <[email protected]> Acked-by: David S. Miller <[email protected]> Cc: [email protected] Signed-off-by: Linus Torvalds <[email protected]>
2011-05-19ipv6: reduce per device ICMP mib sizesEric Dumazet5-33/+68
ipv6 has per device ICMP SNMP counters, taking too much space because they use percpu storage. needed size per device is : (512+4)*sizeof(long)*number_of_possible_cpus*2 On a 32bit kernel, 16 possible cpus, this wastes more than 64kbytes of memory per ipv6 enabled network device, taken in vmalloc pool. Since ICMP messages are rare, just use shared counters (atomic_long_t) Per network space ICMP counters are still using percpu memory, we might also convert them to shared counters in a future patch. Signed-off-by: Eric Dumazet <[email protected]> CC: Denys Fedoryshchenko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-05-19net: ping: fix the coding styleChangli Gao1-3/+7
The characters in a line should be no more than 80. Signed-off-by: Changli Gao <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-05-19net: ping: make local functions staticChangli Gao1-4/+4
As these functions are only used in this file. Signed-off-by: Changli Gao <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-05-19Merge branch 'master' of ↵David S. Miller1-0/+3
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2011-05-19Merge branch 'tip/perf/core' of ↵Ingo Molnar11-145/+1116
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core
2011-05-19Merge branch 'tip/perf/core-3' of ↵Ingo Molnar1-2/+5
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core
2011-05-19kmemleak: Initialise kmemleak after debug_objects_mem_init()Catalin Marinas1-1/+1
Kmemleak frees objects via RCU and when CONFIG_DEBUG_OBJECTS_RCU_HEAD is enabled, the RCU callback triggers a call to free_object() in lib/debugobjects.c. Since kmemleak is initialised before debug objects initialisation, it may result in a kernel panic during booting. This patch moves the kmemleak_init() call after debug_objects_mem_init(). Reported-by: Marcin Slusarz <[email protected]> Tested-by: Tejun Heo <[email protected]> Signed-off-by: Catalin Marinas <[email protected]> Cc: <[email protected]>
2011-05-19kmemleak: Select DEBUG_FS unconditionally in DEBUG_KMEMLEAKCatalin Marinas1-1/+1
In the past DEBUG_FS used to depend on SYSFS and DEBUG_KMEMLEAK selected it conditionally. This is no longer the case, so always select DEBUG_FS via DEBUG_KMEMLEAK. Signed-off-by: Catalin Marinas <[email protected]>
2011-05-19kmemleak: Do not return a pointer to an object that kmemleak did not getCatalin Marinas1-2/+5
The kmemleak_seq_next() function tries to get an object (and increment its use count) before returning it. If it could not get the last object during list traversal (because it may have been freed), the function should return NULL rather than a pointer to such object that it did not get. Signed-off-by: Catalin Marinas <[email protected]> Reported-by: Phil Carmody <[email protected]> Acked-by: Phil Carmody <[email protected]> Cc: <[email protected]>
2011-05-19input/atari: Fix mouse movement and button mappingGeert Uytterhoeven1-4/+4
Up and down movements were reversed, left and right buttons were swapped. Signed-off-by: Geert Uytterhoeven <[email protected]>
2011-05-19input/atari: Fix atarimouse initMichael Schmitz2-4/+6
Atarimouse fails to load as a module (with ENODEV), due to a brown paper bag bug, misinterpreting the semantics of atari_keyb_init(). [geert] Propagate the return value of atari_keyb_init() everywhere Signed-off-by: Michael Schmitz <[email protected]> Signed-off-by: Geert Uytterhoeven <[email protected]>
2011-05-19input/atari: Use the correct mouse interrupt hookMichael Schmitz3-8/+3
The Atari keyboard driver calls atari_mouse_interrupt_hook if it's set, not atari_input_mouse_interrupt_hook. Fix below. [geert] Killed off atari_mouse_interrupt_hook completely, after fixing another incorrect assignment in atarimouse.c. Signed-off-by: Michael Schmitz <[email protected]> Signed-off-by: Geert Uytterhoeven <[email protected]>
2011-05-19m68k/atari: Do not use "/" in interrupt namesGeert Uytterhoeven4-4/+4
It may trigger a warning in fs/proc/generic.c:__xlate_proc_name() when trying to add an entry for the interrupt handler to sysfs. Signed-off-by: Geert Uytterhoeven <[email protected]>
2011-05-19m68k: unistd - Comment out definitions for unimplemented syscallsGeert Uytterhoeven1-22/+24
Suggested-by: Arnd Bergmann <[email protected]> Signed-off-by: Geert Uytterhoeven <[email protected]>
2011-05-19m68k: Really wire up sys_pselect6 and sys_ppollGeert Uytterhoeven1-2/+2
We reserved the numbers a long time ago, but never wired them up in the syscall table as they need TIF_RESTORE_SIGMASK, which we only got last year in commit cb6831d5d3099e772a510eb3e1ed0760ccffb45e ("m68k: Switch to saner sigsuspend()") Signed-off-by: Geert Uytterhoeven <[email protected]> Acked-by: Greg Ungerer <[email protected]> Cc: [email protected]
2011-05-19m68k: Merge mmu and non-mmu versions of sys_call_tableGeert Uytterhoeven3-445/+96
Impact for nommu: - Store table in .rodata instead of .text, - Let kernel/sys_ni.c handle the stubbing of MMU-only syscalls, - Implement sys_mremap and sys_nfsservct, - Remove unused padding at the end of the table. Impact for mmu: - Store table in .rodata instead of .data. Signed-off-by: Geert Uytterhoeven <[email protected]> Acked-by: Greg Ungerer <[email protected]>
2011-05-19MAINTAINERS: Roman Zippel has been MIA for several years.Geert Uytterhoeven1-5/+4
Hence make AFFS and HFS orphans, and remove him as an m68k maintainer. Signed-off-by: Geert Uytterhoeven <[email protected]>
2011-05-19m68k: bitops - Never step beyond the end of the bitmapGeert Uytterhoeven1-26/+55
find_next bitops on m68k (find_next_zero_bit, find_next_bit, and find_next_bit_le) may cause out of bounds memory access when the bitmap size in bits % 32 != 0 and offset (the bitnumber to start searching at) is very close to the bitmap size. For example, unsigned long bitmap[2] = { 0, 0 }; find_next_bit(bitmap, 63, 62); 1. find_next_bit() tries to find any set bits in bitmap[1], but no bits set. 2. Then find_first_bit(bimap + 2, -1) 3. Unfortunately find_first_bit() takes unsigned int as the size argument. 4. find_first_bit will access bitmap[2~] until it find any set bits. Add missing tests for stepping beyond the end of the bitmap to all find_{first,next}_*() functions, and make sure they never return a value larger than the bitmap size. Reported-by: Akinobu Mita <[email protected]> Cc: Andreas Schwab <[email protected]> Signed-off-by: Geert Uytterhoeven <[email protected]>
2011-05-19m68k: bitops - offset == ((long)p - (long)vaddr) * 8Geert Uytterhoeven1-4/+2
Hence use "offset" in find_next_{,zero_}bit(), like is already done for find_next_{,zero_}bit_le() Signed-off-by: Geert Uytterhoeven <[email protected]> Cc: Akinobu Mita <[email protected]> Cc: Andreas Schwab <[email protected]> Signed-off-by: Geert Uytterhoeven <[email protected]>
2011-05-19drivers/xen/sys-hypervisor: Cleanup code/data sections definitionsDaniel Kiper1-1/+1
Cleanup code/data sections definitions accordingly to include/linux/init.h. Signed-off-by: Daniel Kiper <[email protected]> Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
2011-05-19arch/x86/xen/smp: Cleanup code/data sections definitionsDaniel Kiper1-4/+4
Cleanup code/data sections definitions accordingly to include/linux/init.h. Signed-off-by: Daniel Kiper <[email protected]> Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
2011-05-19arch/x86/xen/time: Cleanup code/data sections definitionsDaniel Kiper1-4/+4
Cleanup code/data sections definitions accordingly to include/linux/init.h. Signed-off-by: Daniel Kiper <[email protected]> Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
2011-05-19arch/x86/xen/xen-ops: Cleanup code/data sections definitionsDaniel Kiper1-1/+1
Cleanup code/data sections definitions accordingly to include/linux/init.h. Signed-off-by: Daniel Kiper <[email protected]> Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
2011-05-19arch/x86/xen/mmu: Cleanup code/data sections definitionsDaniel Kiper1-17/+17
Cleanup code/data sections definitions accordingly to include/linux/init.h. Signed-off-by: Daniel Kiper <[email protected]> [v1: Rebased on top of latest linus's to include fixes in mmu.c] Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
2011-05-19[CIFS] Remove sparse warningSteve French2-2/+3
Move extern for cifsConvertToUCS to different header to prevent following warning: CHECK fs/cifs/cifs_unicode.c fs/cifs/cifs_unicode.c:267:1: warning: symbol 'cifsConvertToUCS' was not declared. Should it be static? Signed-off-by: Steve French <[email protected]> Signed-off-by: Pavel Shilovsky <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19[CIFS] Update cifs to version 1.72Steve French1-1/+1
Signed-off-by: Steve French <[email protected]>
2011-05-19cifs: Change key name to cifs.idmap, misc. clean-upShirish Pargaonkar3-62/+6
Change idmap key name from cifs.cifs_idmap to cifs.idmap. Removed unused structure wksidarr and function match_sid(). Handle errors correctly in function init_cifs(). Signed-off-by: Shirish Pargaonkar <[email protected]> Reviewed-by: Jeff Layton <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19cifs: Unconditionally copy mount options to superblock infoSean Finney4-16/+6
Previously mount options were copied and updated in the cifs_sb_info struct only when CONFIG_CIFS_DFS_UPCALL was enabled. Making this information generally available allows us to remove a number of ifdefs, extra function params, and temporary variables. Reviewed-by: Jeff Layton <[email protected]> Signed-off-by: Sean Finney <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19cifs: Use kstrndup for cifs_sb->mountdataSean Finney1-11/+6
A relatively minor nit, but also clarified the "consensus" from the preceding comments that it is in fact better to try for the kstrdup early and cleanup while cleaning up is still a simple thing to do. Reviewed-By: Steve French <[email protected]> Signed-off-by: Sean Finney <[email protected]> Signed-off-by: Pavel Shilovsky <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19cifs: Simplify handling of submount options in cifs_mount.Sean Finney1-13/+11
With CONFIG_DFS_UPCALL enabled, maintain the submount options in cifs_sb->mountdata, simplifying the code just a bit as well as making corner-case allocation problems less likely. Reviewed-by: Jeff Layton <[email protected]> Signed-off-by: Sean Finney <[email protected]> Signed-off-by: Pavel Shilovsky <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19cifs: cifs_parse_mount_options: do not tokenize mount options in-placeSean Finney1-35/+74
To keep strings passed to cifs_parse_mount_options re-usable (which is needed to clean up the DFS referral handling), tokenize a copy of the mount options instead. If values are needed from this tokenized string, they too must be duplicated (previously, some options were copied and others duplicated). Since we are not on the critical path and any cleanup is relatively easy, the extra memory usage shouldn't be a problem (and it is a bit simpler than trying to implement something smarter). Reviewed-by: Jeff Layton <[email protected]> Signed-off-by: Sean Finney <[email protected]> Signed-off-by: Pavel Shilovsky <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19cifs: Add support for mounting Windows 2008 DFS sharesSean Finney1-0/+18
Windows 2008 CIFS servers do not always return PATH_NOT_COVERED when attempting to access a DFS share. Therefore, when checking for remote shares, unconditionally ask for a DFS referral for the UNC (w/out prepath) before continuing with previous behavior of attempting to access the UNC + prepath and checking for PATH_NOT_COVERED. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=31092 Reviewed-by: Jeff Layton <[email protected]> Signed-off-by: Sean Finney <[email protected]> Signed-off-by: Pavel Shilovsky <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19cifs: Extract DFS referral expansion logic to separate functionSean Finney1-36/+69
The logic behind the expansion of DFS referrals is now extracted from cifs_mount into a new static function, expand_dfs_referral. This will reduce duplicate code in upcoming commits. Reviewed-by: Jeff Layton <[email protected]> Signed-off-by: Sean Finney <[email protected]> Signed-off-by: Pavel Shilovsky <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19cifs: turn BCC into a static inlined functionJeff Layton1-3/+6
It's a bad idea to have macro functions that reference variables more than once, as the arguments could have side effects. Turn BCC() into a static inlined function instead. While we're at it, make it return a void * to discourage anyone from dereferencing it as-is. Reported-and-acked-by: David Howells <[email protected]> Signed-off-by: Jeff Layton <[email protected]> Signed-off-by: Steve French <[email protected]> Signed-off-by: Pavel Shilovsky <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19cifs: keep BCC in little-endian formatJeff Layton9-82/+41
This is the same patch as originally posted, just with some merge conflicts fixed up... Currently, the ByteCount is usually converted to host-endian on receive. This is confusing however, as we need to keep two sets of routines for accessing it, and keep track of when to use each routine. Munging received packets like this also limits when the signature can be calulated. Simplify the code by keeping the received ByteCount in little-endian format. This allows us to eliminate a set of routines for accessing it and we can now drop the *_le suffixes from the accessor functions since that's now implied. While we're at it, switch all of the places that read the ByteCount directly to use the get_bcc inline which should also clean up some unaligned accesses. Signed-off-by: Jeff Layton <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19cifs: fix some unused variable warnings in id_rb_searchJeff Layton1-5/+0
fs/cifs/cifsacl.c: In function ‘id_rb_search’: fs/cifs/cifsacl.c:215:19: warning: variable ‘linkto’ set but not used [-Wunused-but-set-variable] fs/cifs/cifsacl.c:214:18: warning: variable ‘parent’ set but not used [-Wunused-but-set-variable] Reviewed-by: Shirish Pargaonkar <[email protected]> Signed-off-by: Jeff Layton <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19CIFS: Simplify invalidate part (try #5)Pavel Shilovsky4-57/+113
Simplify many places when we call cifs_revalidate/invalidate to make it do what it exactly needs. Reviewed-by: Jeff Layton <[email protected]> Signed-off-by: Pavel Shilovsky <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19CIFS: directio read/write cleanupsPavel Shilovsky3-113/+16
Recently introduced strictcache mode brought a new code that can be efficiently used by directio part. That's let us add vectored operations and break unnecessary cifs_user_read and cifs_user_write. Signed-off-by: Pavel Shilovsky <[email protected]> Reviewed-by: Jeff Layton <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19consistently use smb_buf_length as be32 for cifs (try 3)Steve French7-101/+102
There is one big endian field in the cifs protocol, the RFC1001 length, which cifs code (unlike in the smb2 code) had been handling as u32 until the last possible moment, when it was converted to be32 (its native form) before sending on the wire. To remove the last sparse endian warning, and to make this consistent with the smb2 implementation (which always treats the fields in their native size and endianness), convert all uses of smb_buf_length to be32. This version incorporates Christoph's comment about using be32_add_cpu, and fixes a typo in the second version of the patch. Signed-off-by: Steve French <[email protected]> Signed-off-by: Pavel Shilovsky <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19cifs: Invoke id mapping functions (try #17 repost)Shirish Pargaonkar2-24/+325
rb tree search and insertion routines. A SID which needs to be mapped, is looked up in one of the rb trees depending on whether SID is either owner or group SID. If found in the tree, a (mapped) id from that node is assigned to uid or gid as appropriate. If unmapped, an upcall is attempted to map the SID to an id. If upcall is successful, node is marked as mapped. If upcall fails, node stays marked as unmapped and a mapping is attempted again only after an arbitrary time period has passed. To map a SID, which can be either a Owner SID or a Group SID, key description starts with the string "os" or "gs" followed by SID converted to a string. Without "os" or "gs", cifs.upcall does not know whether SID needs to be mapped to either an uid or a gid. Nodes in rb tree have fields to prevent multiple upcalls for a SID. Searching, adding, and removing nodes is done within global locks. Whenever a node is either found or inserted in a tree, a reference is taken on that node. Shrinker routine prunes a node if it has expired but does not prune an expired node if its refcount is not zero (i.e. sid/id of that node is_being/will_be accessed). Thus a node, if its SID needs to be mapped by making an upcall, can safely stay and its fields accessed without shrinker pruning it. A reference (refcount) is put on the node without holding the spinlock but a reference is get on the node by holding the spinlock. Every time an existing mapped node is accessed or mapping is attempted, its timestamp is updated to prevent it from getting erased or a to prevent multiple unnecessary repeat mapping retries respectively. For now, cifs.upcall is only used to map a SID to an id (uid or gid) but it would be used to obtain an SID for an id. Signed-off-by: Shirish Pargaonkar <[email protected]> Reviewed-by: Jeff Layton <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19cifs: Add idmap key and related data structures and functions (try #17 repost)Shirish Pargaonkar4-8/+167
Define (global) data structures to store ids, uids and gids, to which a SID maps. There are two separate trees, one for SID/uid and another one for SID/gid. A new type of key, cifs_idmap_key_type, is used. Keys are instantiated and searched using credential of the root by overriding and restoring the credentials of the caller requesting the key. Id mapping functions are invoked under config option of cifs acl. Signed-off-by: Shirish Pargaonkar <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19CIFS: Add launder_page operation (try #3)Pavel Shilovsky1-6/+42
Add this let us drop filemap_write_and_wait from cifs_invalidate_mapping and simplify the code to properly process invalidate logic. Reviewed-by: Jeff Layton <[email protected]> Signed-off-by: Pavel Shilovsky <[email protected]> Signed-off-by: Steve French <[email protected]>
2011-05-19Introduce smb2 mounts as vers=2Steve French1-0/+17
As with Linux nfs client, which uses "nfsvers=" or "vers=" to indicate which protocol to use for mount, specifying "vers=smb2" or "vers=2" will force an smb2 mount. When vers is not specified cifs is used ie "vers=cifs" or "vers=1" We can eventually autonegotiate down from smb2 to cifs when smb2 is stable enough to make it the default, but this is for the future. At that time we could also implement a "maxprotocol" mount option as smbclient and Samba have today, but that would be premature until smb2 is stable. Intially the smb2 Kconfig option will depend on "BROKEN" until the merge is complete, and then be "EXPERIMENTAL" When it is no longer experimental we can consider changing the default protocol to attempt first. Reviewed-by: Jeff Layton <[email protected]> Reviewed-by: Pavel Shilovsky <[email protected]> Signed-off-by: Steve French <[email protected]>
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