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2018-12-27Merge miscellaneous libnvdimm updates for 4.21Dan Williams297-1274/+3096
* Use common helpers, bitmap_zalloc() and kstrndup(), to replace open coded versions. * Clarify the comments around hotplug vs initial init case for the nfit driver. * Cleanup the libnvdimm init path.
2018-12-27Merge branch 'for-4.20-fixes' into for-4.21Tejun Heo534-2912/+5649
2018-12-27nfs: minor typo in nfs4_callback_up_net()Vasily Averin1-1/+1
Closing ")" was lost in debug message. Signed-off-by: Vasily Averin <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2018-12-27sunrpc: fix debug message in svc_create_xprt()Vasily Averin1-2/+2
_svc_create_xprt() returns positive port number so its non-zero return value is not an error Reviewed-by: Jeff Layton <[email protected]> Signed-off-by: Vasily Averin <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2018-12-27sunrpc: make visible processing error in bc_svc_process()Vasily Averin1-2/+2
Force bc_svc_process() to generate debug message after processing errors Signed-off-by: Vasily Averin <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2018-12-27sunrpc: remove unused xpo_prep_reply_hdr callbackVasily Averin6-24/+11
xpo_prep_reply_hdr are not used now. It was defined for tcp transport only, however it cannot be called indirectly, so let's move it to its caller and remove unused callback. Signed-off-by: Vasily Averin <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2018-12-27sunrpc: remove svc_rdma_bc_classVasily Averin2-63/+0
Remove svc_xprt_class svc_rdma_bc_class and related functions. Signed-off-by: Vasily Averin <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2018-12-27sunrpc: remove svc_tcp_bc_classVasily Averin1-101/+0
Remove svc_xprt_class svc_tcp_bc_class and related functions Signed-off-by: Vasily Averin <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2018-12-27sunrpc: remove unused bc_up operation from rpc_xprt_opsVasily Averin5-35/+0
Signed-off-by: Vasily Averin <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2018-12-27sunrpc: replace svc_serv->sv_bc_xprt by boolean flagVasily Averin5-13/+10
svc_serv-> sv_bc_xprt is netns-unsafe and cannot be used as pointer. To prevent its misuse in future it is replaced by new boolean flag. Signed-off-by: Vasily Averin <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2018-12-27sunrpc: use-after-free in svc_process_common()Vasily Averin5-10/+17
if node have NFSv41+ mounts inside several net namespaces it can lead to use-after-free in svc_process_common() svc_process_common() /* Setup reply header */ rqstp->rq_xprt->xpt_ops->xpo_prep_reply_hdr(rqstp); <<< HERE svc_process_common() can use incorrect rqstp->rq_xprt, its caller function bc_svc_process() takes it from serv->sv_bc_xprt. The problem is that serv is global structure but sv_bc_xprt is assigned per-netnamespace. According to Trond, the whole "let's set up rqstp->rq_xprt for the back channel" is nothing but a giant hack in order to work around the fact that svc_process_common() uses it to find the xpt_ops, and perform a couple of (meaningless for the back channel) tests of xpt_flags. All we really need in svc_process_common() is to be able to run rqstp->rq_xprt->xpt_ops->xpo_prep_reply_hdr() Bruce J Fields points that this xpo_prep_reply_hdr() call is an awfully roundabout way just to do "svc_putnl(resv, 0);" in the tcp case. This patch does not initialiuze rqstp->rq_xprt in bc_svc_process(), now it calls svc_process_common() with rqstp->rq_xprt = NULL. To adjust reply header svc_process_common() just check rqstp->rq_prot and calls svc_tcp_prep_reply_hdr() for tcp case. To handle rqstp->rq_xprt = NULL case in functions called from svc_process_common() patch intruduces net namespace pointer svc_rqst->rq_bc_net and adjust SVC_NET() definition. Some other function was also adopted to properly handle described case. Signed-off-by: Vasily Averin <[email protected]> Cc: [email protected] Fixes: 23c20ecd4475 ("NFS: callback up - users counting cleanup") Signed-off-by: J. Bruce Fields <[email protected]>
2018-12-27sunrpc: use SVC_NET() in svcauth_gss_* functionsVasily Averin1-4/+4
Signed-off-by: Vasily Averin <[email protected]> Cc: [email protected] Signed-off-by: J. Bruce Fields <[email protected]>
2018-12-27nfsd: drop useless LIST_HEADJulia Lawall1-1/+0
Drop LIST_HEAD where the variable it declares is never used. This was introduced in c5c707f96fc9a ("nfsd: implement pNFS layout recalls"), but was not used even in that commit. The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ identifier x; @@ - LIST_HEAD(x); ... when != x // </smpl> Fixes: c5c707f96fc9a ("nfsd: implement pNFS layout recalls") Signed-off-by: Julia Lawall <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2018-12-27Merge tag 'locks-v4.21-1' of ↵Linus Torvalds9-158/+253
git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux Pull file locking updates from Jeff Layton: "The main change in this set is Neil Brown's work to reduce the thundering herd problem when a heavily-contended file lock is released. Previously we'd always wake up all waiters when this occurred. With this set, we'll now we only wake up waiters that were blocked on the range being released" * tag 'locks-v4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux: locks: Use inode_is_open_for_write fs/locks: remove unnecessary white space. fs/locks: merge posix_unblock_lock() and locks_delete_block() fs/locks: create a tree of dependent requests. fs/locks: change all *_conflict() functions to return bool. fs/locks: always delete_block after waiting. fs/locks: allow a lock request to block other requests. fs/locks: use properly initialized file_lock when unlocking. ocfs2: properly initial file_lock used for unlock. gfs2: properly initial file_lock used for unlock. NFS: use locks_copy_lock() to copy locks. fs/locks: split out __locks_wake_up_blocks(). fs/locks: rename some lists and pointers.
2018-12-27Merge tag 'ext4_for_linus' of ↵Linus Torvalds15-177/+296
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 updates from Ted Ts'o: "All cleanups and bug fixes; most notably, fix some problems discovered in ext4's NFS support, and fix an ioctl (EXT4_IOC_GROUP_ADD) used by old versions of e2fsprogs which we accidentally broke a while back. Also fixed some error paths in ext4's quota and inline data support. Finally, improve tail latency in jbd2's commit code" * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: check for shutdown and r/o file system in ext4_write_inode() ext4: force inode writes when nfsd calls commit_metadata() ext4: avoid declaring fs inconsistent due to invalid file handles ext4: include terminating u32 in size of xattr entries when expanding inodes ext4: compare old and new mode before setting update_mode flag ext4: fix EXT4_IOC_GROUP_ADD ioctl ext4: hard fail dax mount on unsupported devices jbd2: update locking documentation for transaction_t ext4: remove redundant condition check jbd2: clean up indentation issue, replace spaces with tab ext4: clean up indentation issues, remove extraneous tabs ext4: missing unlock/put_page() in ext4_try_to_write_inline_data() ext4: fix possible use after free in ext4_quota_enable jbd2: avoid long hold times of j_state_lock while committing a transaction ext4: add ext4_sb_bread() to disambiguate ENOMEM cases
2018-12-27Merge tag 'iomap-4.21-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds1-2/+15
Pull iomap update from Darrick Wong: "Fix a memory overflow bug for blocksize < pagesize" * tag 'iomap-4.21-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: iomap: don't search past page end in iomap_is_partially_uptodate
2018-12-27Merge tag 'xfs-4.21-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds51-714/+932
Pull XFS updates from Darrick Wong: - Fix CoW remapping of extremely fragmented file areas - Fix a zero-length symlink verifier error - Constify some of the rmap owner structures for per-AG metadata - Precalculate inode geometry for later use - Fix scrub counting problems - Don't crash when rtsummary inode is null - Fix x32 ioctl operation - Fix enum->string mappings for ftrace output - Cache realtime summary information in memory * tag 'xfs-4.21-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (24 commits) xfs: reallocate realtime summary cache on growfs xfs: stringify scrub types in ftrace output xfs: stringify btree cursor types in ftrace output xfs: move XFS_INODE_FORMAT_STR mappings to libxfs xfs: move XFS_AG_BTREE_CMP_FORMAT_STR mappings to libxfs xfs: fix symbolic enum printing in ftrace output xfs: fix function pointer type in ftrace format xfs: Fix x32 ioctls when cmd numbers differ from ia32. xfs: Fix bulkstat compat ioctls on x32 userspace. xfs: Align compat attrlist_by_handle with native implementation. xfs: require both realtime inodes to mount xfs: cache minimum realtime summary level xfs: count inode blocks correctly in inobt scrub xfs: precalculate cluster alignment in inodes and blocks xfs: precalculate inodes and blocks per inode cluster xfs: add a block to inode count converter xfs: remove xfs_rmap_ag_owner and friends xfs: const-ify xfs_owner_info arguments xfs: streamline defer op type handling xfs: idiotproof defer op type configuration ...
2018-12-27Merge tag 'fs_for_4.21-rc1' of ↵Linus Torvalds4-9/+15
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull ext2, udf, and quota update from Jan Kara: "Some ext2 cleanups, a fix for UDF crash on corrupted media, and one quota locking fix" * tag 'fs_for_4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: quota: Lock s_umount in exclusive mode for Q_XQUOTA{ON,OFF} quotactls. udf: Fix BUG on corrupted inode ext2: change reusable parameter to true when calling mb_cache_entry_create() ext2: remove redundant condition check ext2: avoid unnecessary operation in ext2_error()
2018-12-27Merge tag 'fsnotify_for_v4.21-rc1' of ↵Linus Torvalds8-47/+79
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull fsnotify updates from Jan Kara: "Support for new FAN_OPEN_EXEC event and couple of cleanups around fsnotify" * tag 'fsnotify_for_v4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: fanotify: Use inode_is_open_for_write fanotify: Make sure to check event_len when copying fsnotify/fdinfo: include fdinfo.h for inotify_show_fdinfo() fanotify: introduce new event mask FAN_OPEN_EXEC_PERM fsnotify: refactor fsnotify_parent()/fsnotify() paired calls when event is on path fanotify: introduce new event mask FAN_OPEN_EXEC fanotify: return only user requested event types in event mask
2018-12-27Merge tag 'dlm-4.21' of ↵Linus Torvalds6-23/+34
git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm Pull dlm updates from David Teigland: "This set is entirely trivial fixes, mainly around correct cleanup on error paths and improved error checks. One patch adds scheduling in a potentially long recovery loop" * tag 'dlm-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm: dlm: fix invalid cluster name warning dlm: NULL check before some freeing functions is not needed dlm: NULL check before kmem_cache_destroy is not needed dlm: fix missing idr_destroy for recover_idr dlm: memory leaks on error path in dlm_user_request() dlm: lost put_lkb on error path in receive_convert() and receive_unlock() dlm: possible memory leak on error path in create_lkb() dlm: fixed memory leaks after failed ls_remove_names allocation dlm: fix possible call to kfree() for non-initialized pointer dlm: Don't swamp the CPU with callbacks queued during recovery dlm: don't leak kernel pointer to userspace dlm: don't allow zero length names dlm: fix invalid free
2018-12-27Merge tag 'for-4.21-tag' of ↵Linus Torvalds50-2198/+3030
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux Pull btrfs updates from David Sterba: "New features: - swapfile support - after a long time it's here, with some limitations where COW design does not work well with the swap implementation (nodatacow file, no compression, cannot be snapshotted, not possible on multiple devices, ...), as this is the most restricted but working setup, we'll try to improve that in the future - metadata uuid - an optional incompat feature to assign a new filesystem UUID without overwriting all metadata blocks, stored only in superblock - more balance messages are printed to system log, initial is in the format of the command line that would be used to start it Fixes: - tag pages of a snapshot to better separate pages that are involved in the snapshot (and need to get synced) from newly dirtied pages that could slow down or even livelock the snapshot operation - improved check of filesystem id associated with a device during scan to detect duplicate devices that could be mixed up during mount - fix device replace state transitions, eg. when it ends up interrupted and reboot tries to restart balance too, or when start/cancel ioctls race - fix a crash due to a race when quotas are enabled during snapshot creation - GFP_NOFS/memalloc_nofs_* fixes due to GFP_KERNEL allocations in transaction context - fix fsync of files with multiple hard links in new directories - fix race of send with transaction commits that create snapshots Core changes: - cleanups: * further removals of now-dead fsync code * core function for finding free extent has been split and provides a base for further cleanups to make the logic more understandable * removed lot of indirect callbacks for data and metadata inodes * simplified refcounting and locking for cloned extent buffers * removed redundant function arguments * defines converted to enums where appropriate - separate reserve for delayed refs from global reserve, update logic to do less trickery and ad-hoc heuristics, move out some related expensive operations from transaction commit or file truncate - dev-replace switched from custom locking scheme to semaphore - remove first phase of balance that tried to make some space for the relocation by calling shrink and grow, this did not work as expected and only introduced more error states due to potential resize failures, slightly improves the runtime as the chunks on all devices are not needlessly enumerated - clone and deduplication now use generic helper that adds a few more checks that were missing from the original btrfs implementation of the ioctls" * tag 'for-4.21-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (125 commits) btrfs: Fix typos in comments and strings btrfs: improve error handling of btrfs_add_link Btrfs: use generic_remap_file_range_prep() for cloning and deduplication btrfs: Refactor main loop in extent_readpages btrfs: Remove 1st shrink/grow phase from balance Btrfs: send, fix race with transaction commits that create snapshots Btrfs: use nofs context when initializing security xattrs to avoid deadlock btrfs: run delayed items before dropping the snapshot btrfs: catch cow on deleting snapshots btrfs: extent-tree: cleanup one-shot usage of @blocksize in do_walk_down Btrfs: scrub, move setup of nofs contexts higher in the stack btrfs: scrub: move scrub_setup_ctx allocation out of device_list_mutex btrfs: scrub: pass fs_info to scrub_setup_ctx btrfs: fix truncate throttling btrfs: don't run delayed refs in the end transaction logic btrfs: rework btrfs_check_space_for_delayed_refs btrfs: add new flushing states for the delayed refs rsv btrfs: update may_commit_transaction to use the delayed refs rsv btrfs: introduce delayed_refs_rsv btrfs: only track ref_heads in delayed_ref_updates ...
2018-12-27Merge tag 'gfs2-4.21.fixes' of ↵Linus Torvalds19-231/+317
git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2 Pull gfs2 updates from Bob Peterson: - Enhancements and performance improvements to journal replay (Abhi Das) - Cleanup of gfs2_is_ordered and gfs2_is_writeback (Andreas Gruenbacher) - Fix a potential double-free in inode creation (Andreas Gruenbacher) - Fix the bitmap search loop that was searching too far (Andreas Gruenbacher) - Various cleanups (Andreas Gruenbacher, Bob Peterson) - Implement Steve Whitehouse's patch to dump nrpages for inodes (Bob Peterson) - Fix a withdraw bug where stuffed journaled data files didn't allocate enough journal space to be grown (Bob Peterson) * tag 'gfs2-4.21.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: gfs2: take jdata unstuff into account in do_grow gfs2: Dump nrpages for inodes and their glocks gfs2: Fix loop in gfs2_rbm_find gfs2: Get rid of potential double-freeing in gfs2_create_inode gfs2: Remove vestigial bd_ops gfs2: read journal in large chunks to locate the head gfs2: add a helper function to get_log_header that can be used elsewhere gfs2: changes to gfs2_log_XXX_bio gfs2: add more timing info to journal recovery process gfs2: Fix the gfs2_invalidatepage description gfs2: Clean up gfs2_is_{ordered,writeback}
2018-12-27include/linux/phy/phy.h: fix minor kerneldoc errorsRobert P. J. Day1-1/+1
Correct two minor kerneldoc errors: 1) missing reference to @mode in struct phy_ops 2) obsolete reference to @init_data in struct_phy_attrs, removed in dbc98635e0d42f0e62ea92813df1e0e4c90f8375 Signed-off-by: Robert P. J. Day <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-27phy.h: fix obvious errors in doc and kerneldoc contentRobert P. J. Day1-5/+8
1) note that gianfar_phy.c was removed years ago 2) fix obvious copy and paste error in regular doc 3) change regular doc into kerneldoc for phy_modes() Signed-off-by: Robert P. J. Day <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-27net/wan/fsl_ucc_hdlc: Avoid double free in ucc_hdlc_probe()Wen Yang1-1/+0
This patch fixes potential double frees if register_hdlc_device() fails. Signed-off-by: Wen Yang <[email protected]> Reviewed-by: Peng Hao <[email protected]> CC: Zhao Qiang <[email protected]> CC: "David S. Miller" <[email protected]> CC: [email protected] CC: [email protected] CC: [email protected] Signed-off-by: David S. Miller <[email protected]>
2018-12-27net: marvell: fix a missing check of acpi_match_deviceKangjie Lu1-0/+2
When acpi_match_device fails, its return value is NULL. Directly using the return value without a check may result in a NULL-pointer dereference. The fix checks if acpi_match_device fails, and if so, returns -EINVAL. Signed-off-by: Kangjie Lu <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-27tipc: fix a missing check of genlmsg_putKangjie Lu1-0/+2
genlmsg_put could fail. The fix inserts a check of its return value, and if it fails, returns -EMSGSIZE. Signed-off-by: Kangjie Lu <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-27atl1e: checking the status of atl1e_write_phy_regKangjie Lu1-1/+3
atl1e_write_phy_reg() could fail. The fix issues an error message when it fails. Signed-off-by: Kangjie Lu <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-27net: dsa: bcm_sf2: Propagate error value from mdio_writeKangjie Lu1-4/+3
Both bcm_sf2_sw_indir_rw and mdiobus_write_nested could fail, so let's return their error codes upstream. Signed-off-by: Kangjie Lu <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-27net: stmicro: fix a missing check of clk_prepareKangjie Lu1-1/+3
clk_prepare() could fail, so let's check its status, and if it fails, return its error code upstream. Signed-off-by: Kangjie Lu <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-27net: (cpts) fix a missing check of clk_prepareKangjie Lu1-1/+3
clk_prepare() could fail, so let's check its status, and if it fails, return its error code upstream. Signed-off-by: Kangjie Lu <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-27niu: fix missing checks of niu_pci_eeprom_readKangjie Lu1-2/+8
niu_pci_eeprom_read() may fail, so we should check its return value before using the read data. Signed-off-by: Kangjie Lu <[email protected]> Acked-by: Shannon Nelson <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-27net: chelsio: Add a missing check on cudg_get_bufferAditya Pakki1-0/+4
cudbg_collect_hw_sched() could fail when the function cudg_get_buffer() returns an error. The fix adds a check to the latter function returning error on failure Signed-off-by: Aditya Pakki <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-27ipv6/route: Add a missing check on proc_dointvecAditya Pakki1-1/+5
While flushing the cache via ipv6_sysctl_rtcache_flush(), the call to proc_dointvec() may fail. The fix adds a check that returns the error, on failure. Signed-off-by: Aditya Pakki <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-27tipc: fix a double free in tipc_enable_bearer()Cong Wang1-1/+0
bearer_disable() already calls kfree_rcu() to free struct tipc_bearer, we don't need to call kfree() again. Fixes: cb30a63384bc ("tipc: refactor function tipc_enable_bearer()") Reported-by: [email protected] Cc: Ying Xue <[email protected]> Cc: Jon Maloy <[email protected]> Signed-off-by: Cong Wang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-27Merge branch 'linus' of ↵Linus Torvalds183-5096/+15845
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto updates from Herbert Xu: "API: - Add 1472-byte test to tcrypt for IPsec - Reintroduced crypto stats interface with numerous changes - Support incremental algorithm dumps Algorithms: - Add xchacha12/20 - Add nhpoly1305 - Add adiantum - Add streebog hash - Mark cts(cbc(aes)) as FIPS allowed Drivers: - Improve performance of arm64/chacha20 - Improve performance of x86/chacha20 - Add NEON-accelerated nhpoly1305 - Add SSE2 accelerated nhpoly1305 - Add AVX2 accelerated nhpoly1305 - Add support for 192/256-bit keys in gcmaes AVX - Add SG support in gcmaes AVX - ESN for inline IPsec tx in chcr - Add support for CryptoCell 703 in ccree - Add support for CryptoCell 713 in ccree - Add SM4 support in ccree - Add SM3 support in ccree - Add support for chacha20 in caam/qi2 - Add support for chacha20 + poly1305 in caam/jr - Add support for chacha20 + poly1305 in caam/qi2 - Add AEAD cipher support in cavium/nitrox" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (130 commits) crypto: skcipher - remove remnants of internal IV generators crypto: cavium/nitrox - Fix build with !CONFIG_DEBUG_FS crypto: salsa20-generic - don't unnecessarily use atomic walk crypto: skcipher - add might_sleep() to skcipher_walk_virt() crypto: x86/chacha - avoid sleeping under kernel_fpu_begin() crypto: cavium/nitrox - Added AEAD cipher support crypto: mxc-scc - fix build warnings on ARM64 crypto: api - document missing stats member crypto: user - remove unused dump functions crypto: chelsio - Fix wrong error counter increments crypto: chelsio - Reset counters on cxgb4 Detach crypto: chelsio - Handle PCI shutdown event crypto: chelsio - cleanup:send addr as value in function argument crypto: chelsio - Use same value for both channel in single WR crypto: chelsio - Swap location of AAD and IV sent in WR crypto: chelsio - remove set but not used variable 'kctx_len' crypto: ux500 - Use proper enum in hash_set_dma_transfer crypto: ux500 - Use proper enum in cryp_set_dma_transfer crypto: aesni - Add scatter/gather avx stubs, and use them in C crypto: aesni - Introduce partial block macro ..
2018-12-27um: Remove obsolete reenable_XX callsAnton Ivanov10-35/+0
reenable_fd has been a NOP since the introduction of the EPOLL based interrupt controller. reenable_channel() is no longer needed as the flow control is now handled via the write IRQs on the channel. Signed-off-by: Anton Ivanov <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
2018-12-27um: writev needs <sys/uio.h>Christoph Hellwig1-0/+1
vector_user.c doesn't compile without this for me. Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
2018-12-27Add Anton Ivanov to UML maintainersAnton Ivanov1-0/+1
Signed-off-by: Anton Ivanov <[email protected]> Acked-by: Richard Weinberger <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
2018-12-27um: remove redundant generic-yMasahiro Yamada1-2/+0
This commit removes redundant generic-y defines in arch/um/include/asm/Kbuild. It is redundant to define generic-y when arch-specific implementation exists in arch/$(ARCH)/include/asm/*.h Remove the following generic-y: hardirq.h io.h Signed-off-by: Masahiro Yamada <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
2018-12-27um: Optimize Flush TLB for force/fork caseAnton Ivanov1-4/+5
When UML handles a fork the page tables need to be brought up to date. That was done using brute force - full tlb flush. This is actually unnecessary, because the mapped-in mappings are all correct and the only mappings which need to be updated after a flush are any unmaps (so that paging works) as well as any pending protection changes. This optimization squeezes out up to 3% from a full kernel rebuild time under memory pressure. Signed-off-by: Anton Ivanov <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
2018-12-27um: Avoid marking pages with "changed protection"Anton Ivanov1-1/+8
Changing protection is a very high cost operation in UML because in addition to an extra syscall it also interrupts mmap merge sequences generated by the tlb. While the condition is not particularly common it is worth avoiding. Signed-off-by: Anton Ivanov <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
2018-12-27um: Skip TLB flushing where not neededAnton Ivanov1-7/+14
Skip TLB flushing for all cases where it is not needed, not just flush_tlb_mm_range Signed-off-by: Anton Ivanov <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
2018-12-27um: Optimize TLB operations v2Anton Ivanov1-28/+57
Make the code to merge mmap/munmap/mprotect operations in tlb.c common for userspace and kernel. Kernel tlb operations can now be merged as well. Signed-off-by: Anton Ivanov <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
2018-12-27um: Remove unnecessary faulted check in uaccess.cAnton Ivanov1-11/+12
It is not necessary to check if a fault has occured or not after disabling pagefaults. kmap_atomic does that in all cases and we can disable it for 64 bit where kmap is not needed and a simple page_address would suffice. dd if=/dev/zero of=/dev/null bs=1M count=1M Before: 3.1GB/s. After: 3.5GB/s There is a noticeable difference for file disk read and write as well as less noticeable difference for network IO. Signed-off-by: Anton Ivanov <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
2018-12-27um: Add support for DISCARD in the UBD DriverAnton Ivanov3-11/+65
Support for DISCARD and WRITE_ZEROES in the ubd driver using fallocate. DISCARD is enabled by default and can be disabled using a new UBD command line flag. If the underlying fs on which the UBD image is stored does not support DISCARD the support for both DISCARD and WRITE_ZEROES is turned off. Signed-off-by: Anton Ivanov <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
2018-12-27um: Remove unsafe printks from the io threadAnton Ivanov1-25/+17
Printk out of the io thread has been proven to be unsafe. This is not surprising as the thread is part of the UML hypervisor code. It is not supposed to invoke any kernel code/resources. It is necesssary to pass the error to the block IO layer and let it Signed-off-by: Anton Ivanov <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
2018-12-27um: Clean-up command processing in UML UBD driverAnton Ivanov1-30/+47
Clean-up command processing and return BLK_STS_NOTSUP for uknown commands. Signed-off-by: Anton Ivanov <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
2018-12-27um: Switch to block-mq constants in the UML UBD driverAnton Ivanov1-28/+38
Switch to block mq-constants for both commands, error codes and various computations. Signed-off-by: Anton Ivanov <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
2018-12-27um: Make GCOV depend on !KCOVRichard Weinberger1-0/+1
Both do more or less the same thing and are mutually exclusive. If both are enabled the build will fail. Sooner or later we can kill UML's GCOV. Signed-off-by: Richard Weinberger <[email protected]>
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