summaryrefslogtreecommitdiff
path: root/fs
AgeCommit message (Collapse)Author
2022-04-29io_uring: return hint on whether more data is available after receivefor-5.19/io_uring-net-2022-05-22Jens Axboe
For now just use a CQE flag for this, with big CQE support we could return the actual number of bytes left. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-29Merge branch 'for-5.19/io_uring-socket' into for-5.19/io_uring-netJens Axboe
* for-5.19/io_uring-socket: (73 commits) io_uring: use the text representation of ops in trace io_uring: rename op -> opcode io_uring: add io_uring_get_opcode io_uring: add type to op enum io_uring: add socket(2) support net: add __sys_socket_file() io_uring: fix trace for reduced sqe padding io_uring: add fgetxattr and getxattr support io_uring: add fsetxattr and setxattr support fs: split off do_getxattr from getxattr fs: split off setxattr_copy and do_setxattr function from setxattr io_uring: return an error when cqe is dropped io_uring: use constants for cq_overflow bitfield io_uring: rework io_uring_enter to simplify return value io_uring: trace cqe overflows io_uring: add trace support for CQE overflow io_uring: allow re-poll if we made progress io_uring: support MSG_WAITALL for IORING_OP_SEND(MSG) io_uring: add support for IORING_ASYNC_CANCEL_ANY io_uring: allow IORING_OP_ASYNC_CANCEL with 'fd' key ...
2022-04-29Merge tag 'io_uring-5.18-2022-04-29' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull io_uring fixes from Jens Axboe: "Pretty boring: - three patches just adding reserved field checks (me, Eugene) - Fixing a potential regression with IOPOLL caused by a block change (Joseph)" Boring is good. * tag 'io_uring-5.18-2022-04-29' of git://git.kernel.dk/linux-block: io_uring: check that data field is 0 in ringfd unregister io_uring: fix uninitialized field in rw io_kiocb io_uring: check reserved fields for recv/recvmsg io_uring: check reserved fields for send/sendmsg
2022-04-29Merge tag 'ceph-for-5.18-rc5' of https://github.com/ceph/ceph-clientLinus Torvalds
Pull ceph client fixes from Ilya Dryomov: "A fix for a NULL dereference that turns out to be easily triggerable by fsync (marked for stable) and a false positive WARN and snap_rwsem locking fixups" * tag 'ceph-for-5.18-rc5' of https://github.com/ceph/ceph-client: ceph: fix possible NULL pointer dereference for req->r_session ceph: remove incorrect session state check ceph: get snap_rwsem read lock in handle_cap_export for ceph_add_cap libceph: disambiguate cluster/pool full log message
2022-04-29io_uring: check that data field is 0 in ringfd unregisterio_uring-5.18-2022-04-29Eugene Syromiatnikov
Only allow data field to be 0 in struct io_uring_rsrc_update user arguments to allow for future possible usage. Fixes: e7a6c00dc77a ("io_uring: add support for registering ring file descriptors") Signed-off-by: Eugene Syromiatnikov <esyr@redhat.com> Link: https://lore.kernel.org/r/20220429142218.GA28696@asgard.redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-28io_uring: fix uninitialized field in rw io_kiocbJoseph Ravichandran
io_rw_init_file does not initialize kiocb->private, so when iocb_bio_iopoll reads kiocb->private it can contain uninitialized data. Fixes: 3e08773c3841 ("block: switch polling to be bio based") Signed-off-by: Joseph Ravichandran <jravi@mit.edu> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-28Merge tag 'gfs2-v5.18-rc4-fix2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2 Pull gfs2 fix from Andreas Gruenbacher: - No short reads or writes upon glock contention * tag 'gfs2-v5.18-rc4-fix2' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: gfs2: No short reads or writes upon glock contention
2022-04-28Merge tag 'xfs-5.18-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds
Pull xfs fixes from Dave Chinner: - define buffer bit flags as unsigned to fix gcc-5 + c11 warnings - remove redundant XFS fields from MAINTAINERS - fix inode buffer locking order regression * tag 'xfs-5.18-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: xfs: reorder iunlink remove operation in xfs_ifree MAINTAINERS: update IOMAP FILESYSTEM LIBRARY and XFS FILESYSTEM xfs: convert buffer flags to unsigned.
2022-04-28gfs2: No short reads or writes upon glock contentionAndreas Gruenbacher
Commit 00bfe02f4796 ("gfs2: Fix mmap + page fault deadlocks for buffered I/O") changed gfs2_file_read_iter() and gfs2_file_buffered_write() to allow dropping the inode glock while faulting in user buffers. When the lock was dropped, a short result was returned to indicate that the operation was interrupted. As pointed out by Linus (see the link below), this behavior is broken and the operations should always re-acquire the inode glock and resume the operation instead. Link: https://lore.kernel.org/lkml/CAHk-=whaz-g_nOOoo8RRiWNjnv2R+h6_xk2F1J4TuSRxk1MtLw@mail.gmail.com/ Fixes: 00bfe02f4796 ("gfs2: Fix mmap + page fault deadlocks for buffered I/O") Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2022-04-27Merge tag 'zonefs-5.18-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs Pull zonefs fixes from Damien Le Moal: "Two fixes for rc5: - Fix inode initialization to make sure that the inode flags are all cleared. - Use zone reset operation instead of close to make sure that the zone of an empty sequential file in never in an active state after closing the file" * tag 'zonefs-5.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs: zonefs: Fix management of open zones zonefs: Clear inode information flags on inode creation
2022-04-26io_uring: check reserved fields for recv/recvmsgJens Axboe
We should check unused fields for non-zero and -EINVAL if they are set, making it consistent with other opcodes. Fixes: aa1fa28fc73e ("io_uring: add support for recvmsg()") Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-26io_uring: check reserved fields for send/sendmsgJens Axboe
We should check unused fields for non-zero and -EINVAL if they are set, making it consistent with other opcodes. Fixes: 0fa03c624d8f ("io_uring: add support for sendmsg()") Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-26Merge tag 'gfs2-v5.18-rc4-fix' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2 Pull gfs2 fix from Andreas Gruenbacher: - Only re-check for direct I/O writes past the end of the file after re-acquiring the inode glock. * tag 'gfs2-v5.18-rc4-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: gfs2: Don't re-check for write past EOF unnecessarily
2022-04-26Merge tag 'for-5.18-rc4-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux Pull btrfs fixes from David Sterba: - direct IO fixes: - restore passing file offset to correctly calculate checksums when repairing on read and bio split happens - use correct bio when sumitting IO on zoned filesystem - zoned mode fixes: - fix selection of device to correctly calculate device capabilities when allocating a new bio - use a dedicated lock for exclusion during relocation - fix leaked plug after failure syncing log - fix assertion during scrub and relocation * tag 'for-5.18-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: zoned: use dedicated lock for data relocation btrfs: fix assertion failure during scrub due to block group reallocation btrfs: fix direct I/O writes for split bios on zoned devices btrfs: fix direct I/O read repair for split bios btrfs: fix and document the zoned device choice in alloc_new_bio btrfs: fix leaked plug after failure syncing log on zoned filesystems
2022-04-26gfs2: Don't re-check for write past EOF unnecessarilyAndreas Gruenbacher
Only re-check for direct I/O writes past the end of the file after re-acquiring the inode glock. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2022-04-26io_uring: add io_uring_get_opcodeDylan Yudaken
In some debug scenarios it is useful to have the text representation of the opcode. Add this function in preparation. Signed-off-by: Dylan Yudaken <dylany@fb.com> Link: https://lore.kernel.org/r/20220426082907.3600028-3-dylany@fb.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-25Merge tag 'f2fs-fix-5.18' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs Pull f2fs fixes from Jaegeuk Kim: "This includes major bug fixes introduced in 5.18-rc1 and 5.17+: - Remove obsolete whint_mode (5.18-rc1) - Fix IO split issue caused by op_flags change in f2fs (5.18-rc1) - Fix a wrong condition check to detect IO failure loop (5.18-rc1) - Fix wrong data truncation during roll-forward (5.17+)" * tag 'f2fs-fix-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: f2fs: should not truncate blocks during roll-forward recovery f2fs: fix wrong condition check when failing metapage read f2fs: keep io_flags to avoid IO split due to different op_flags in two fio holders f2fs: remove obsolete whint_mode
2022-04-25ceph: fix possible NULL pointer dereference for req->r_sessionXiubo Li
The request will be inserted into the ci->i_unsafe_dirops before assigning the req->r_session, so it's possible that we will hit NULL pointer dereference bug here. Cc: stable@vger.kernel.org URL: https://tracker.ceph.com/issues/55327 Signed-off-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Tested-by: Aaron Tomlin <atomlin@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2022-04-25ceph: remove incorrect session state checkXiubo Li
Once the session is opened the s->s_ttl will be set, and when receiving a new mdsmap and the MDS map is changed, it will be possibly will close some sessions and open new ones. And then some sessions will be in CLOSING state evening without unmounting. URL: https://tracker.ceph.com/issues/54979 Signed-off-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2022-04-25ceph: get snap_rwsem read lock in handle_cap_export for ceph_add_capNiels Dossche
ceph_add_cap says in its function documentation that the caller should hold the read lock on the session snap_rwsem. Furthermore, not only ceph_add_cap needs that lock, when it calls to ceph_lookup_snap_realm it eventually calls ceph_get_snap_realm which states via lockdep that snap_rwsem needs to be held. handle_cap_export calls ceph_add_cap without that mdsc->snap_rwsem held. Thus, since ceph_get_snap_realm and ceph_add_cap both need the lock, the common place to acquire that lock is inside handle_cap_export. Signed-off-by: Niels Dossche <dossche.niels@gmail.com> Reviewed-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2022-04-24io_uring: add socket(2) supportJens Axboe
Supports both regular socket(2) where a normal file descriptor is instantiated when called, or direct descriptors. Link: https://lore.kernel.org/r/20220412202240.234207-3-axboe@kernel.dk Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: add fgetxattr and getxattr supportStefan Roesch
This adds support to io_uring for the fgetxattr and getxattr API. Signed-off-by: Stefan Roesch <shr@fb.com> Acked-by: Christian Brauner <brauner@kernel.org> Link: https://lore.kernel.org/r/20220323154420.3301504-5-shr@fb.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: add fsetxattr and setxattr supportStefan Roesch
This adds support to io_uring for the fsetxattr and setxattr API. Signed-off-by: Stefan Roesch <shr@fb.com> Acked-by: Christian Brauner <christian.brauner@ubuntu.com> Link: https://lore.kernel.org/r/20220323154420.3301504-4-shr@fb.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24fs: split off do_getxattr from getxattrStefan Roesch
This splits off do_getxattr function from the getxattr function. This will allow io_uring to call it from its io worker. Signed-off-by: Stefan Roesch <shr@fb.com> Acked-by: Christian Brauner <christian.brauner@ubuntu.com> Link: https://lore.kernel.org/r/20220323154420.3301504-3-shr@fb.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24fs: split off setxattr_copy and do_setxattr function from setxattrStefan Roesch
This splits of the setup part of the function setxattr in its own dedicated function called setxattr_copy. In addition it also exposes a new function called do_setxattr for making the setxattr call. This makes it possible to call these two functions from io_uring in the processing of an xattr request. Signed-off-by: Stefan Roesch <shr@fb.com> Acked-by: Christian Brauner <christian.brauner@ubuntu.com> Link: https://lore.kernel.org/r/20220323154420.3301504-2-shr@fb.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: return an error when cqe is droppedDylan Yudaken
Right now io_uring will not actively inform userspace if a CQE is dropped. This is extremely rare, requiring a CQ ring overflow, as well as a GFP_ATOMIC kmalloc failure. However the consequences could cause for example applications to go into an undefined state, possibly waiting for a CQE that never arrives. Return an error code (EBADR) in these cases. Since this is expected to be incredibly rare, try and avoid as much as possible affecting the hot code paths, and so it only is returned lazily and when there is no other available CQEs. Once the error is returned, reset the error condition assuming the user is either ok with it or will clean up appropriately. Signed-off-by: Dylan Yudaken <dylany@fb.com> Link: https://lore.kernel.org/r/20220421091345.2115755-6-dylany@fb.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: use constants for cq_overflow bitfieldDylan Yudaken
Prepare to use this bitfield for more flags by using constants instead of magic value 0 Signed-off-by: Dylan Yudaken <dylany@fb.com> Link: https://lore.kernel.org/r/20220421091345.2115755-5-dylany@fb.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: rework io_uring_enter to simplify return valueDylan Yudaken
io_uring_enter returns the count submitted preferrably over an error code. In some code paths this check is not required, so reorganise the code so that the check is only done as needed. This is also a prep for returning error codes only in waiting scenarios. Signed-off-by: Dylan Yudaken <dylany@fb.com> Link: https://lore.kernel.org/r/20220421091345.2115755-4-dylany@fb.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: trace cqe overflowsDylan Yudaken
Trace cqe overflows in io_uring. Print ocqe before the check, so if it is NULL it indicates that it has been dropped. Signed-off-by: Dylan Yudaken <dylany@fb.com> Link: https://lore.kernel.org/r/20220421091345.2115755-3-dylany@fb.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: allow re-poll if we made progressJens Axboe
We currently check REQ_F_POLLED before arming async poll for a notification to retry. If it's set, then we don't allow poll and will punt to io-wq instead. This is done to prevent a situation where a buggy driver will repeatedly return that there's space/data available yet we get -EAGAIN. However, if we already transferred data, then it should be safe to rely on poll again. Gate the check on whether or not REQ_F_PARTIAL_IO is also set. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: support MSG_WAITALL for IORING_OP_SEND(MSG)Jens Axboe
Like commit 7ba89d2af17a for recv/recvmsg, support MSG_WAITALL for the send side. If this flag is set and we do a short send, retry for a stream of seqpacket socket. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: add support for IORING_ASYNC_CANCEL_ANYJens Axboe
Rather than match on a specific key, be it user_data or file, allow canceling any request that we can lookup. Works like IORING_ASYNC_CANCEL_ALL in that it cancels multiple requests, but it doesn't key off user_data or the file. Can't be set with IORING_ASYNC_CANCEL_FD, as that's a key selector. Only one may be used at the time. Signed-off-by: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/r/20220418164402.75259-6-axboe@kernel.dk Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: allow IORING_OP_ASYNC_CANCEL with 'fd' keyJens Axboe
Currently sqe->addr must contain the user_data of the request being canceled. Introduce the IORING_ASYNC_CANCEL_FD flag, which tells the kernel that we're keying off the file fd instead for cancelation. This allows canceling any request that a) uses a file, and b) was assigned the file based on the value being passed in. Signed-off-by: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/r/20220418164402.75259-5-axboe@kernel.dk
2022-04-24io_uring: add support for IORING_ASYNC_CANCEL_ALLJens Axboe
The current cancelation will lookup and cancel the first request it finds based on the key passed in. Add a flag that allows to cancel any request that matches they key. It completes with the number of requests found and canceled, or res < 0 if an error occured. Signed-off-by: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/r/20220418164402.75259-4-axboe@kernel.dk
2022-04-24io_uring: pass in struct io_cancel_data consistentlyJens Axboe
In preparation for being able to not only key cancel off the user_data, pass in the io_cancel_data struct for the various functions that deal with request cancelation. Signed-off-by: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/r/20220418164402.75259-3-axboe@kernel.dk
2022-04-24io_uring: remove dead 'poll_only' argument to io_poll_cancel()Jens Axboe
It's only called from one location, and it always passes in 'false'. Kill the argument, and just pass in 'false' to io_poll_find(). Signed-off-by: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/r/20220418164402.75259-2-axboe@kernel.dk
2022-04-24io_uring: refactor io_disarm_next() lockingPavel Begunkov
Split timeout handling into removal + failing, so we can reduce spinlocking time and remove another instance of triple nested locking. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/0f00d115f9d4c5749028f19623708ad3695512d6.1650458197.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: move timeout locking in io_timeout_cancel()Pavel Begunkov
Move ->timeout_lock grabbing inside of io_timeout_cancel(), so we can do io_req_task_queue_fail() outside of the lock. It's much nicer than relying on triple nested locking. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/cde758c2897930d31e205ed8f476d4ec879a8849.1650458197.git.asml.silence@gmail.com [axboe: drop now wrong timeout_lock annotation] Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: store SCM state in io_fixed_file->file_ptrJens Axboe
A previous commit removed SCM accounting for non-unix sockets, as those are the only ones that can cause a fixed file reference. While that is true, it also means we're now dereferencing the file as part of the workqueue driven __io_sqe_files_unregister() after the process has exited. This isn't safe for SCM files, as unix gc may have already reaped them when the process exited. KASAN complains about this: [ 12.307040] Freed by task 0: [ 12.307592] kasan_save_stack+0x28/0x4c [ 12.308318] kasan_set_track+0x28/0x38 [ 12.309049] kasan_set_free_info+0x24/0x44 [ 12.309890] ____kasan_slab_free+0x108/0x11c [ 12.310739] __kasan_slab_free+0x14/0x1c [ 12.311482] slab_free_freelist_hook+0xd4/0x164 [ 12.312382] kmem_cache_free+0x100/0x1dc [ 12.313178] file_free_rcu+0x58/0x74 [ 12.313864] rcu_core+0x59c/0x7c0 [ 12.314675] rcu_core_si+0xc/0x14 [ 12.315496] _stext+0x30c/0x414 [ 12.316287] [ 12.316687] Last potentially related work creation: [ 12.317885] kasan_save_stack+0x28/0x4c [ 12.318845] __kasan_record_aux_stack+0x9c/0xb0 [ 12.319976] kasan_record_aux_stack_noalloc+0x10/0x18 [ 12.321268] call_rcu+0x50/0x35c [ 12.322082] __fput+0x2fc/0x324 [ 12.322873] ____fput+0xc/0x14 [ 12.323644] task_work_run+0xac/0x10c [ 12.324561] do_notify_resume+0x37c/0xe74 [ 12.325420] el0_svc+0x5c/0x68 [ 12.326050] el0t_64_sync_handler+0xb0/0x12c [ 12.326918] el0t_64_sync+0x164/0x168 [ 12.327657] [ 12.327976] Second to last potentially related work creation: [ 12.329134] kasan_save_stack+0x28/0x4c [ 12.329864] __kasan_record_aux_stack+0x9c/0xb0 [ 12.330735] kasan_record_aux_stack+0x10/0x18 [ 12.331576] task_work_add+0x34/0xf0 [ 12.332284] fput_many+0x11c/0x134 [ 12.332960] fput+0x10/0x94 [ 12.333524] __scm_destroy+0x80/0x84 [ 12.334213] unix_destruct_scm+0xc4/0x144 [ 12.334948] skb_release_head_state+0x5c/0x6c [ 12.335696] skb_release_all+0x14/0x38 [ 12.336339] __kfree_skb+0x14/0x28 [ 12.336928] kfree_skb_reason+0xf4/0x108 [ 12.337604] unix_gc+0x1e8/0x42c [ 12.338154] unix_release_sock+0x25c/0x2dc [ 12.338895] unix_release+0x58/0x78 [ 12.339531] __sock_release+0x68/0xec [ 12.340170] sock_close+0x14/0x20 [ 12.340729] __fput+0x18c/0x324 [ 12.341254] ____fput+0xc/0x14 [ 12.341763] task_work_run+0xac/0x10c [ 12.342367] do_notify_resume+0x37c/0xe74 [ 12.343086] el0_svc+0x5c/0x68 [ 12.343510] el0t_64_sync_handler+0xb0/0x12c [ 12.344086] el0t_64_sync+0x164/0x168 We have an extra bit we can use in file_ptr on 64-bit, use that to store whether this file is SCM'ed or not, avoiding the need to look at the file contents itself. This does mean that 32-bit will be stuck with SCM for all registered files, just like 64-bit did before the referenced commit. Fixes: 1f59bc0f18cf ("io_uring: don't scm-account for non af_unix sockets") Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: kill ctx arg from io_req_put_rsrcPavel Begunkov
The ctx argument of io_req_put_rsrc() is not used, kill it. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/bb51bf3ff02775b03e6ea21bc79c25d7870d1644.1650311386.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: add a helper for putting rsrc nodesPavel Begunkov
Add a simple helper to encapsulating dropping rsrc nodes references, it's cleaner and will help if we'd change rsrc refcounting or play with percpu_ref_put() [no]inlining. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/63fdd953ac75898734cd50e8f69e95e6664f46fe.1650311386.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: store rsrc node in req instead of refsPavel Begunkov
req->fixed_rsrc_refs keeps a pointer to rsrc node pcpu references, but it's more natural just to store rsrc node directly. There were some reasons for that in the past but not anymore. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/cee1c86ec9023f3e4f6ce8940d58c017ef8782f4.1650311386.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: refactor io_assign_file error pathPavel Begunkov
All io_assign_file() callers do error handling themselves, req_set_fail() in the io_assign_file()'s fail path needlessly bloats the kernel and is not the best abstraction to have. Simplify the error path. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/eff77fb1eac2b6a90cca5223813e6a396ffedec0.1650311386.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: use right helpers for file assign lockingPavel Begunkov
We have io_ring_submit_[un]lock() functions helping us with conditional ->uring_lock locking, use them in io_file_get_fixed() instead of hand coding. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/c9c9ff1e046f6eb68da0a251962a697f8a2275fa.1650311386.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: add data_race annotationsPavel Begunkov
We have several racy reads, mark them with data_race() to demonstrate this fact. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/7e56e750d294c70b2a56938bd733386f19f0eb53.1650056133.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: inline io_req_complete_fail_submit()Pavel Begunkov
Inline io_req_complete_fail_submit(), there is only one caller and the name doesn't tell us much. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/fe5851af01dcd39fc84b71b8539c7cbe4658fb6d.1650056133.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: refactor io_submit_sqe()Pavel Begunkov
Remove one extra if for non-linked path of io_submit_sqe(). Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/03183199d1bf494b4a72eca16d792c8a5945acb4.1650056133.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: refactor lazy link failPavel Begunkov
Remove the lazy link fail logic from io_submit_sqe() and hide it into a helper. It simplifies the code and will be needed in next patches. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/6a68aca9cf4492132da1d7c8a09068b74aba3c65.1650056133.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: introduce IO_REQ_LINK_FLAGSPavel Begunkov
Add a macro for all link request flags to avoid duplication. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/df38b883e31e7e0ca4e364d25a0743862961b180.1650056133.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-24io_uring: refactor io_queue_sqe()Pavel Begunkov
io_queue_sqe() is a part of the submission path and we try hard to keep it inlined, so shed some extra bytes from it by moving the error checking part into io_queue_sqe_arm_apoll() and renaming it accordingly. note: io_queue_sqe_arm_apoll() is not inlined, thus the patch doesn't change the number of function calls for the apoll path. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/9b79edd246336decfaca79b949a15ac69123490d.1650056133.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-04 00:32:50 +0000