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| * | direct_IO: remove rw from a_ops->direct_IO()Omar Sandoval2015-04-121-2/+1Star
| | | | | | | | | | | | | | | | | | | | | Now that no one is using rw, remove it completely. Signed-off-by: Omar Sandoval <osandov@osandov.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | direct_IO: use iov_iter_rw() instead of rw everywhereOmar Sandoval2015-04-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The rw parameter to direct_IO is redundant with iov_iter->type, and treated slightly differently just about everywhere it's used: some users do rw & WRITE, and others do rw == WRITE where they should be doing a bitwise check. Simplify this with the new iov_iter_rw() helper, which always returns either READ or WRITE. Signed-off-by: Omar Sandoval <osandov@osandov.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | Merge branch 'akpm' (patches from Andrew)Linus Torvalds2015-04-161-1/+1
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge second patchbomb from Andrew Morton: - the rest of MM - various misc bits - add ability to run /sbin/reboot at reboot time - printk/vsprintf changes - fiddle with seq_printf() return value * akpm: (114 commits) parisc: remove use of seq_printf return value lru_cache: remove use of seq_printf return value tracing: remove use of seq_printf return value cgroup: remove use of seq_printf return value proc: remove use of seq_printf return value s390: remove use of seq_printf return value cris fasttimer: remove use of seq_printf return value cris: remove use of seq_printf return value openrisc: remove use of seq_printf return value ARM: plat-pxa: remove use of seq_printf return value nios2: cpuinfo: remove use of seq_printf return value microblaze: mb: remove use of seq_printf return value ipc: remove use of seq_printf return value rtc: remove use of seq_printf return value power: wakeup: remove use of seq_printf return value x86: mtrr: if: remove use of seq_printf return value linux/bitmap.h: improve BITMAP_{LAST,FIRST}_WORD_MASK MAINTAINERS: CREDITS: remove Stefano Brivio from B43 .mailmap: add Ricardo Ribalda CREDITS: add Ricardo Ribalda Delgado ...
| * | | kernel: conditionally support non-root users, groups and capabilitiesIulia Manda2015-04-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are a lot of embedded systems that run most or all of their functionality in init, running as root:root. For these systems, supporting multiple users is not necessary. This patch adds a new symbol, CONFIG_MULTIUSER, that makes support for non-root users, non-root groups, and capabilities optional. It is enabled under CONFIG_EXPERT menu. When this symbol is not defined, UID and GID are zero in any possible case and processes always have all capabilities. The following syscalls are compiled out: setuid, setregid, setgid, setreuid, setresuid, getresuid, setresgid, getresgid, setgroups, getgroups, setfsuid, setfsgid, capget, capset. Also, groups.c is compiled out completely. In kernel/capability.c, capable function was moved in order to avoid adding two ifdef blocks. This change saves about 25 KB on a defconfig build. The most minimal kernels have total text sizes in the high hundreds of kB rather than low MB. (The 25k goes down a bit with allnoconfig, but not that much. The kernel was booted in Qemu. All the common functionalities work. Adding users/groups is not possible, failing with -ENOSYS. Bloat-o-meter output: add/remove: 7/87 grow/shrink: 19/397 up/down: 1675/-26325 (-24650) [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Iulia Manda <iulia.manda21@gmail.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge branch 'for-linus-2' of ↵Linus Torvalds2015-04-152-4/+0Star
|\ \ \ \ | |/ / / |/| / / | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull second vfs update from Al Viro: "Now that net-next went in... Here's the next big chunk - killing ->aio_read() and ->aio_write(). There'll be one more pile today (direct_IO changes and generic_write_checks() cleanups/fixes), but I'd prefer to keep that one separate" * 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (37 commits) ->aio_read and ->aio_write removed pcm: another weird API abuse infinibad: weird APIs switched to ->write_iter() kill do_sync_read/do_sync_write fuse: use iov_iter_get_pages() for non-splice path fuse: switch to ->read_iter/->write_iter switch drivers/char/mem.c to ->read_iter/->write_iter make new_sync_{read,write}() static coredump: accept any write method switch /dev/loop to vfs_iter_write() serial2002: switch to __vfs_read/__vfs_write ashmem: use __vfs_read() export __vfs_read() autofs: switch to __vfs_write() new helper: __vfs_write() switch hugetlbfs to ->read_iter() coda: switch to ->read_iter/->write_iter ncpfs: switch to ->read_iter/->write_iter net/9p: remove (now-)unused helpers p9_client_attach(): set fid->uid correctly ...
| * | make new_sync_{read,write}() staticAl Viro2015-04-122-4/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | All places outside of core VFS that checked ->read and ->write for being NULL or called the methods directly are gone now, so NULL {read,write} with non-NULL {read,write}_iter will do the right thing in all cases. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | Merge branch 'akpm' (patches from Andrew)Linus Torvalds2015-04-151-5/+0Star
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge first patchbomb from Andrew Morton: - arch/sh updates - ocfs2 updates - kernel/watchdog feature - about half of mm/ * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (122 commits) Documentation: update arch list in the 'memtest' entry Kconfig: memtest: update number of test patterns up to 17 arm: add support for memtest arm64: add support for memtest memtest: use phys_addr_t for physical addresses mm: move memtest under mm mm, hugetlb: abort __get_user_pages if current has been oom killed mm, mempool: do not allow atomic resizing memcg: print cgroup information when system panics due to panic_on_oom mm: numa: remove migrate_ratelimited mm: fold arch_randomize_brk into ARCH_HAS_ELF_RANDOMIZE mm: split ET_DYN ASLR from mmap ASLR s390: redefine randomize_et_dyn for ELF_ET_DYN_BASE mm: expose arch_mmap_rnd when available s390: standardize mmap_rnd() usage powerpc: standardize mmap_rnd() usage mips: extract logic for mmap_rnd() arm64: standardize mmap_rnd() usage x86: standardize mmap_rnd() usage arm: factor out mmap ASLR into mmap_rnd ...
| * | page_writeback: clean up mess around cancel_dirty_page()Konstantin Khlebnikov2015-04-151-5/+0Star
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch replaces cancel_dirty_page() with a helper function account_page_cleaned() which only updates counters. It's called from truncate_complete_page() and from try_to_free_buffers() (hack for ext3). Page is locked in both cases, page-lock protects against concurrent dirtiers: see commit 2d6d7f982846 ("mm: protect set_page_dirty() from ongoing truncation"). Delete_from_page_cache() shouldn't be called for dirty pages, they must be handled by caller (either written or truncated). This patch treats final dirty accounting fixup at the end of __delete_from_page_cache() as a debug check and adds WARN_ON_ONCE() around it. If something removes dirty pages without proper handling that might be a bug and unwritten data might be lost. Hugetlbfs has no dirty pages accounting, ClearPageDirty() is enough here. cancel_dirty_page() in nfs_wb_page_cancel() is redundant. This is helper for nfs_invalidate_page() and it's called only in case complete invalidation. The mess was started in v2.6.20 after commits 46d2277c796f ("Clean up and make try_to_free_buffers() not race with dirty pages") and 3e67c0987d75 ("truncate: clear page dirtiness before running try_to_free_buffers()") first was reverted right in v2.6.20 in commit ecdfc9787fe5 ("Resurrect 'try_to_free_buffers()' VM hackery"), second in v2.6.25 commit a2b345642f53 ("Fix dirty page accounting leak with ext3 data=journal"). Custom fixes were introduced between these points. NFS in v2.6.23, commit 1b3b4a1a2deb ("NFS: Fix a write request leak in nfs_invalidate_page()"). Kludge in __delete_from_page_cache() in v2.6.24, commit 3a6927906f1b ("Do dirty page accounting when removing a page from the page cache"). Since v2.6.25 all of them are redundant. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Cc: Tejun Heo <tj@kernel.org> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'iocb' into for-nextAl Viro2015-04-122-3/+2Star
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| * fs: move struct kiocb to fs.hChristoph Hellwig2015-03-261-1/+0Star
| | | | | | | | | | | | | | | | struct kiocb now is a generic I/O container, so move it to fs.h. Also do a #include diet for aio.h while we're at it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * fs: split generic and aio kiocbChristoph Hellwig2015-03-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Most callers in the kernel want to perform synchronous file I/O, but still have to bloat the stack with a full struct kiocb. Split out the parts needed in filesystem code from those in the aio code, and only allocate those needed to pass down argument on the stack. The aio code embedds the generic iocb in the one it allocates and can easily get back to it by using container_of. Also add a ->ki_complete method to struct kiocb, this is used to call into the aio code and thus removes the dependency on aio for filesystems impementing asynchronous operations. It will also allow other callers to substitute their own completion callback. We also add a new ->ki_flags field to work around the nasty layering violation recently introduced in commit 5e33f6 ("usb: gadget: ffs: add eventfd notification about ffs events"). Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * fs: remove ki_nbytesChristoph Hellwig2015-03-131-1/+1
| | | | | | | | | | | | | | | | There is no need to pass the total request length in the kiocb, as we already get passed in through the iov_iter argument. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | NFSv4.1: Clear the old state by our client id before establishing a new leaseTrond Myklebust2015-03-043-5/+17
| | | | | | | | | | | | | | | | | | | | If the call to exchange-id returns with the EXCHGID4_FLAG_CONFIRMED_R flag set, then that means our lease was established by a previous mount instance. Ensure that we detect this situation, and that we clear the state held by that mount. Reported-by: Jorge Mora <Jorge.Mora@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv4: Fix a race in NFSv4.1 server trunking discoveryTrond Myklebust2015-03-043-8/+17
| | | | | | | | | | | | | | | | We do not want to allow a race with another NFS mount to cause nfs41_walk_client_list() to establish a lease on our nfs_client before we're done checking for trunking. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFS: Don't write enable new pages while an invalidation is proceedingTrond Myklebust2015-03-032-0/+4
| | | | | | | | | | | | | | | | | | nfs_vm_page_mkwrite() should wait until the page cache invalidation is finished. This is the second patch in a 2 patch series to deprecate the NFS client's reliance on nfs_release_page() in the context of nfs_invalidate_mapping(). Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFS: Fix a regression in the read() syscallTrond Myklebust2015-03-032-5/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When invalidating the page cache for a regular file, we want to first sync all dirty data to disk and then call invalidate_inode_pages2(). The latter relies on nfs_launder_page() and nfs_release_page() to deal respectively with dirty pages, and unstable written pages. When commit 9590544694bec ("NFS: avoid deadlocks with loop-back mounted NFS filesystems.") changed the behaviour of nfs_release_page(), then it made it possible for invalidate_inode_pages2() to fail with an EBUSY. Unfortunately, that error is then propagated back to read(). Let's therefore work around the problem for now by protecting the call to sync the data and invalidate_inode_pages2() so that they are atomic w.r.t. the addition of new writes. Later on, we can revisit whether or not we still need nfs_launder_page() and nfs_release_page(). Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv4: Ensure we skip delegations that are already being returnedTrond Myklebust2015-03-031-0/+6
| | | | | | | | | | | | | | | | In nfs_client_return_marked_delegations() and nfs_delegation_reap_unclaimed() we want to optimise the loop traversal by skipping delegations that are already in the process of being returned. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv4: Pin the superblock while we're returning the delegationTrond Myklebust2015-03-031-4/+16
| | | | | | | | | | | | | | This patch ensures that the superblock doesn't go ahead and disappear underneath us while the state manager thread is returning delegations. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv4: Ensure we honour NFS_DELEGATION_RETURNING in nfs_inode_set_delegation()Trond Myklebust2015-03-031-1/+4
| | | | | | | | | | | | | | Ensure that nfs_inode_set_delegation() doesn't inadvertently detach a delegation that is already in the process of being returned. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv4: Ensure that we don't reap a delegation that is being returnedTrond Myklebust2015-03-031-5/+7
| | | | | | | | Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFS: Fix stateid used for NFS v4 closesAnna Schumaker2015-03-031-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | After 566fcec60 the client uses the "current stateid" from the nfs4_state structure to close a file. This could potentially contain a delegation stateid, which is disallowed by the protocol and causes servers to return NFS4ERR_BAD_STATEID. This patch restores the (correct) behavior of sending the open stateid to close a file. Reported-by: Olga Kornievskaia <kolga@netapp.com> Fixes: 566fcec60 (NFSv4: Fix an atomicity problem in CLOSE) Signed-off-by: Anna Schumaker <Anna.Schumaker@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv4: Don't call put_rpccred() under the rcu_read_lock()Trond Myklebust2015-03-021-1/+1
| | | | | | | | | | | | | | | | put_rpccred() can sleep. Fixes: 8f649c3762547 ("NFSv4: Fix the locking in nfs_inode_reclaim_delegation()") Cc: stable@vger.kernel.org # 2.6.35+ Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFS: Don't require a filehandle to refresh the inode in nfs_prime_dcache()Trond Myklebust2015-03-021-3/+13
| | | | | | | | | | | | | | | | | | | | | | | | If the server does not return a valid set of attributes that we can use to either create a file or refresh the inode, then there is no value in calling nfs_prime_dcache(). However if we're just refreshing the inode using the attributes that the server returned, then it shouldn't matter whether or not we have a filehandle, as long as we check the fsid+fileid combination. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv3: Use the readdir fileid as the mounted-on-fileidTrond Myklebust2015-03-021-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When we call readdirplus, set the fileid normally returned by readdir as the mounted-on-fileid, since that is commonly the case if there is a mountpoint. To ensure that we get it right, we only set the flag if the readdir fileid differs from the one returned in the readdirplus attributes. This again means that we can avoid the issues described in commit 2ef47eb1aee17 ("NFS: Fix use of nfs_attr_use_mounted_on_fileid()"), which only fixed NFSv4. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFS: Don't invalidate a submounted dentry in nfs_prime_dcache()Trond Myklebust2015-03-021-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we're traversing a directory which contains a submounted filesystem, or one that has a referral, the NFS server that is processing the READDIR request will often return information for the underlying (mounted-on) directory. It may, or may not, also return filehandle information. If this happens, and the lookup in nfs_prime_dcache() returns the dentry for the submounted directory, the filehandle comparison will fail, and we call d_invalidate(). Post-commit 8ed936b5671bf ("vfs: Lazily remove mounts on unlinked files and directories."), this means the entire subtree is unmounted. The following minimal patch addresses this problem by punting on the invalidation if there is a submount. Kudos to Neil Brown <neilb@suse.de> for having tracked down this issue (see link). Reported-by: Nix <nix@esperi.org.uk> Link: http://lkml.kernel.org/r/87iofju9ht.fsf@spindle.srvr.nix Cc: stable@vger.kernel.org # 3.18+ Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv4: Set a barrier in the update_changeattr() helperTrond Myklebust2015-03-022-0/+2
| | | | | | | | | | | | | | | | Ensure that we don't regress the changes that were made to the directory. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Tested-by: Chuck Lever <chuck.lever@oracle.com>
* | NFS: Fix nfs_post_op_update_inode() to set an attribute barrierTrond Myklebust2015-03-021-0/+1
| | | | | | | | | | | | | | | | nfs_post_op_update_inode() is called after a self-induced attribute update. Ensure that it also sets the barrier. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Tested-by: Chuck Lever <chuck.lever@oracle.com>
* | NFS: Remove size hack in nfs_inode_attrs_need_update()Trond Myklebust2015-03-021-8/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | Prior to this patch, we used to always OK attribute updates that extended the file size on the assumption that we might be performing writeback. Now that we have attribute barriers to protect the writeback related updates, we should remove this hack, as it can cause truncate() operations to apparently be reverted if/when a readahead or getattr RPC call races with our on-the-wire SETATTR. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Tested-by: Chuck Lever <chuck.lever@oracle.com>
* | NFSv4: Add attribute update barriers to delegreturn and pNFS layoutcommitTrond Myklebust2015-03-021-0/+1
| | | | | | | | | | | | | | | | Ensure that other operations that race with delegreturn and layoutcommit cannot revert the attribute updates that were made on the server. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Tested-by: Chuck Lever <chuck.lever@oracle.com>
* | NFS: Add attribute update barriers to NFS writebacksTrond Myklebust2015-03-026-8/+56
| | | | | | | | | | | | | | | | Ensure that other operations that race with our write RPC calls cannot revert the file size updates that were made on the server. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Tested-by: Chuck Lever <chuck.lever@oracle.com>
* | NFS: Set an attribute barrier on all updatesTrond Myklebust2015-03-021-0/+4
| | | | | | | | | | | | | | | | Ensure that we update the attribute barrier even if there were no invalidations, provided that this value is newer than the old one. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Tested-by: Chuck Lever <chuck.lever@oracle.com>
* | NFS: Add attribute update barriers to nfs_setattr_update_inode()Trond Myklebust2015-03-024-10/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ensure that other operations which raced with our setattr RPC call cannot revert the file attribute changes that were made on the server. To do so, we artificially bump the attribute generation counter on the inode so that all calls to nfs_fattr_init() that precede ours will be dropped. The motivation for the patch came from Chuck Lever's reports of readaheads racing with truncate operations and causing the file size to be reverted. Reported-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Tested-by: Chuck Lever <chuck.lever@oracle.com>
* | NFS: Add a helper to set attribute barriersTrond Myklebust2015-03-021-0/+16
| | | | | | | | | | Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Tested-by: Chuck Lever <chuck.lever@oracle.com>
* | NFS: Ensure that buffered writes wait for O_DIRECT writes to completeTrond Myklebust2015-03-021-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | The O_DIRECT code will grab the inode->i_mutex and flush out buffered writes, before scheduling a read or a write. However there is no equivalent in the buffered write code to wait for O_DIRECT to complete. Fixes a reported issue in xfstests generic/133, when first performing an O_DIRECT write followed by a buffered write. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Tested-by: Chuck Lever <chuck.lever@oracle.com>
* | NFSv4: nfs4_open_recover_helper() must set share accessTrond Myklebust2015-02-271-0/+3
| | | | | | | | | | | | | | | | | | The share access mode is now specified as an argument in the nfs4_opendata, and so nfs4_open_recover_helper() needs to call nfs4_map_atomic_open_share() in order to set it. Fixes: 6ae373394c42 ("NFSv4.1: Ask for no delegation on OPEN if using O_DIRECT") Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv4.1: Clean up bind_conn_to_sessionTrond Myklebust2015-02-182-22/+22
| | | | | | | | | | | | We don't need to fake up an entire session in order retrieve the arguments. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv4.1: Always set up a forward channel when binding the sessionTrond Myklebust2015-02-181-1/+1
| | | | | | | | | | | | | | | | Currently, the client requests a back channel or a bidirectional connection when binding a new TCP channel to an existing session. Fix that to ask for a forward channel or bidirectional. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv4.1: Don't set up a backchannel if the server didn't agree to do soTrond Myklebust2015-02-183-2/+9
| | | | | | | | | | | | | | If the server doesn't agree to out backchannel setup request, then don't set one up. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv4.1: Clean up create_sessionTrond Myklebust2015-02-183-22/+42
| | | | | | | | | | | | Don't decode directly into the shared struct session Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | Merge branch 'cleanups'Trond Myklebust2015-02-1813-168/+161Star
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | Merge cleanups requested by Linus. * cleanups: (3 commits) pnfs: Refactor the *_layout_mark_request_commit to use pnfs_layout_mark_request_commit nfs: Can call nfs_clear_page_commit() instead nfs: Provide and use helper functions for marking a page as unstable
| * | pnfs: Refactor the *_layout_mark_request_commit to use ↵Tom Haynes2015-02-184-75/+45Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pnfs_layout_mark_request_commit The File Layout's filelayout_mark_request_commit() is almost the Flex File Layout's ff_layout_mark_request_commit(). And that can be reduced by calling into nfs_request_add_commit_list(). Signed-off-by: Tom Haynes <loghyr@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
| * | nfs: Can call nfs_clear_page_commit() insteadTom Haynes2015-02-131-5/+2Star
| | | | | | | | | | | | | | | Signed-off-by: Tom Haynes <loghyr@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
| * | nfs: Provide and use helper functions for marking a page as unstableTom Haynes2015-02-134-21/+19Star
| |/ | | | | | | | | Signed-off-by: Tom Haynes <loghyr@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
| * Merge branch 'for-3.20/bdi' of git://git.kernel.dk/linux-blockLinus Torvalds2015-02-127-26/+11Star
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull backing device changes from Jens Axboe: "This contains a cleanup of how the backing device is handled, in preparation for a rework of the life time rules. In this part, the most important change is to split the unrelated nommu mmap flags from it, but also removing a backing_dev_info pointer from the address_space (and inode), and a cleanup of other various minor bits. Christoph did all the work here, I just fixed an oops with pages that have a swap backing. Arnd fixed a missing export, and Oleg killed the lustre backing_dev_info from staging. Last patch was from Al, unexporting parts that are now no longer needed outside" * 'for-3.20/bdi' of git://git.kernel.dk/linux-block: Make super_blocks and sb_lock static mtd: export new mtd_mmap_capabilities fs: make inode_to_bdi() handle NULL inode staging/lustre/llite: get rid of backing_dev_info fs: remove default_backing_dev_info fs: don't reassign dirty inodes to default_backing_dev_info nfs: don't call bdi_unregister ceph: remove call to bdi_unregister fs: remove mapping->backing_dev_info fs: export inode_to_bdi and use it in favor of mapping->backing_dev_info nilfs2: set up s_bdi like the generic mount_bdev code block_dev: get bdev inode bdi directly from the block device block_dev: only write bdev inode on close fs: introduce f_op->mmap_capabilities for nommu mmap support fs: kill BDI_CAP_SWAP_BACKED fs: deduplicate noop_backing_dev_info
| | * nfs: don't call bdi_unregisterChristoph Hellwig2015-01-203-20/+6Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | bdi_destroy already does all the work, and if we delay freeing the anon bdev we can get away with just that single call. Addintionally remove the call during mount failure, as deactivate_super_locked will already call ->kill_sb and clean up the bdi for us. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@fb.com>
| | * fs: remove mapping->backing_dev_infoChristoph Hellwig2015-01-201-1/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we never use the backing_dev_info pointer in struct address_space we can simply remove it and save 4 to 8 bytes in every inode. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Reviewed-by: Tejun Heo <tj@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@fb.com>
| | * fs: export inode_to_bdi and use it in favor of mapping->backing_dev_infoChristoph Hellwig2015-01-202-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we got rid of the bdi abuse on character devices we can always use sb->s_bdi to get at the backing_dev_info for a file, except for the block device special case. Export inode_to_bdi and replace uses of mapping->backing_dev_info with it to prepare for the removal of mapping->backing_dev_info. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Tejun Heo <tj@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@fb.com>
| * | Merge tag 'nfs-for-3.20-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds2015-02-1237-1183/+4528
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull NFS client updates from Trond Myklebust: "Highlights incluse: Features: - Removing the forced serialisation of open()/close() calls in NFSv4.x (x>0) makes for a significant performance improvement in metadata intensive workloads. - Full support for the pNFS "flexible files" layout type - Further RPC/RDMA client improvements from Chuck Bugfixes: - Stable fix: NFSv4.1 backchannel calls blocking operations with !TASK_RUNNING - Stable fix: pnfs_generic_pg_init_read/write can be called with lseg == NULL - Stable fix: Fix an Oopsable condition when nsm_mon_unmon is called as part of the namespace cleanup, - Stable fix: Ensure we reference the inode for return-on-close in delegreturn - Use SO_REUSEPORT to ensure that NFSv3 TCP connections can rebind to the same source address/port combination during a disconnect/ reconnect event. This is a requirement imposed by most NFSv3 server duplicate reply cache implementations. Optimisations: - Ask for no NFSv4.1 delegations on OPEN if using O_DIRECT Other: - Add Anna Schumaker as co-maintainer for the NFS client" * tag 'nfs-for-3.20-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (119 commits) SUNRPC: Cleanup to remove xs_tcp_close() pnfs: delete an unintended goto pnfs/flexfiles: Do not dprintk after the free SUNRPC: Fix stupid typo in xs_sock_set_reuseport SUNRPC: Define xs_tcp_fin_timeout only if CONFIG_SUNRPC_DEBUG SUNRPC: Handle connection reset more efficiently. SUNRPC: Remove the redundant XPRT_CONNECTION_CLOSE flag SUNRPC: Make xs_tcp_close() do a socket shutdown rather than a sock_release SUNRPC: Ensure xs_tcp_shutdown() requests a full close of the connection SUNRPC: Cleanup to remove remaining uses of XPRT_CONNECTION_ABORT SUNRPC: Remove TCP socket linger code SUNRPC: Remove TCP client connection reset hack SUNRPC: TCP/UDP always close the old socket before reconnecting SUNRPC: Add helpers to prevent socket create from racing SUNRPC: Ensure xs_reset_transport() resets the close connection flags SUNRPC: Do not clear the source port in xs_reset_transport SUNRPC: Handle EADDRINUSE on connect SUNRPC: Set SO_REUSEPORT socket option for TCP connections NFSv4.1: Fix pnfs_put_lseg races NFSv4.1: pnfs_send_layoutreturn should use GFP_NOFS ...
| * \ \ Merge branch 'akpm' (patches from Andrew)Linus Torvalds2015-02-111-1/+0Star
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge misc updates from Andrew Morton: "Bite-sized chunks this time, to avoid the MTA ratelimiting woes. - fs/notify updates - ocfs2 - some of MM" That laconic "some MM" is mainly the removal of remap_file_pages(), which is a big simplification of the VM, and which gets rid of a *lot* of random cruft and special cases because we no longer support the non-linear mappings that it used. From a user interface perspective, nothing has changed, because the remap_file_pages() syscall still exists, it's just done by emulating the old behavior by creating a lot of individual small mappings instead of one non-linear one. The emulation is slower than the old "native" non-linear mappings, but nobody really uses or cares about remap_file_pages(), and simplifying the VM is a big advantage. * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (78 commits) memcg: zap memcg_slab_caches and memcg_slab_mutex memcg: zap memcg_name argument of memcg_create_kmem_cache memcg: zap __memcg_{charge,uncharge}_slab mm/page_alloc.c: place zone_id check before VM_BUG_ON_PAGE check mm: hugetlb: fix type of hugetlb_treat_as_movable variable mm, hugetlb: remove unnecessary lower bound on sysctl handlers"? mm: memory: merge shared-writable dirtying branches in do_wp_page() mm: memory: remove ->vm_file check on shared writable vmas xtensa: drop _PAGE_FILE and pte_file()-related helpers x86: drop _PAGE_FILE and pte_file()-related helpers unicore32: drop pte_file()-related helpers um: drop _PAGE_FILE and pte_file()-related helpers tile: drop pte_file()-related helpers sparc: drop pte_file()-related helpers sh: drop _PAGE_FILE and pte_file()-related helpers score: drop _PAGE_FILE and pte_file()-related helpers s390: drop pte_file()-related helpers parisc: drop _PAGE_FILE and pte_file()-related helpers openrisc: drop _PAGE_FILE and pte_file()-related helpers nios2: drop _PAGE_FILE and pte_file()-related helpers ...
| | * | | mm: drop vm_ops->remap_pages and generic_file_remap_pages() stubKirill A. Shutemov2015-02-101-1/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Nobody uses it anymore. [akpm@linux-foundation.org: fix filemap_xip.c] Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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