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2022-03-21NFSv4.1 provide mount option to toggle trunking discoveryOlga Kornievskaia
Introduce a new mount option -- trunkdiscovery,notrunkdiscovery -- to toggle whether or not the client will engage in actively discovery of trunking locations. v2 make notrunkdiscovery default Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Fixes: 1976b2b31462 ("NFSv4.1 query for fs_location attr on a new file system") Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2022-03-21ceph: fix memory leak in ceph_readdir when note_last_dentry returns errorXiubo Li
Reset the last_readdir at the same time, and add a comment explaining why we don't free last_readdir when dir_emit returns false. Signed-off-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2022-03-21ceph: uninitialized variable in debug outputDan Carpenter
If read_mapping_folio() fails then "inline_version" is printed without being initialized. [ jlayton: use CEPH_INLINE_NONE instead of "-1" ] Fixes: 083db6fd3e73 ("ceph: uninline the data on a file opened for writing") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2022-03-21ceph: use tracked average r/w/m latencies to display metrics in debugfsVenky Shankar
Signed-off-by: Venky Shankar <vshankar@redhat.com> Reviewed-by: Xiubo Li <xiubli@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2022-03-21ceph: include average/stdev r/w/m latency in mds metricsVenky Shankar
stdev is computed in `cephfs-top` tool - clients forward square of sums and IO count required to calculate stdev. Signed-off-by: Venky Shankar <vshankar@redhat.com> Reviewed-by: Xiubo Li <xiubli@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2022-03-21ceph: track average r/w/m latencyVenky Shankar
Make the math a bit simpler to understand (should not affect execution speeds). Signed-off-by: Venky Shankar <vshankar@redhat.com> Reviewed-by: Xiubo Li <xiubli@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2022-03-21ceph: use ktime_to_timespec64() rather than jiffies_to_timespec64()Venky Shankar
Latencies are of type ktime_t, coverting from jiffies is incorrect. Also, switch to "struct ceph_timespec" for r/w/m latencies. Signed-off-by: Venky Shankar <vshankar@redhat.com> Reviewed-by: Xiubo Li <xiubli@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2022-03-21ceph: assign the ci only when the inode isn't NULLXiubo Li
The ceph_find_inode() may will fail and return NULL. Signed-off-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2022-03-21ceph: fix inode reference leakage in ceph_get_snapdir()Xiubo Li
The ceph_get_inode() will search for or insert a new inode into the hash for the given vino, and return a reference to it. If new is non-NULL, its reference is consumed. We should release the reference when in error handing cases. Signed-off-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2022-03-21io_uring: fix memory ordering when SQPOLL thread goes to sleepAlmog Khaikin
Without a full memory barrier between the store to the flags and the load of the SQ tail the two operations can be reordered and this can lead to a situation where the SQPOLL thread goes to sleep while the application writes to the SQ tail and doesn't see the wakeup flag. This memory barrier pairs with a full memory barrier in the application between its store to the SQ tail and its load of the flags. Signed-off-by: Almog Khaikin <almogkh@gmail.com> Link: https://lore.kernel.org/r/20220321090059.46313-1-almogkh@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-03-20io_uring: ensure that fsnotify is always calledJens Axboe
Ensure that we call fsnotify_modify() if we write a file, and that we do fsnotify_access() if we read it. This enables anyone using inotify on the file to get notified. Ditto for fallocate, ensure that fsnotify_modify() is called. Cc: stable@vger.kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-03-20nfsd: fix using the correct variable for sizeof()Jakob Koschel
While the original code is valid, it is not the obvious choice for the sizeof() call and in preparation to limit the scope of the list iterator variable the sizeof should be changed to the size of the destination. Signed-off-by: Jakob Koschel <jakobkoschel@gmail.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2022-03-20ksmbd: use netif_is_bridge_portTobias Klauser
Use netif_is_bridge_port defined in <linux/netdevice.h> instead of open-coding it. Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-03-20xfs: xfs_is_shutdown vs xlog_is_shutdown cage fightDave Chinner
I've been chasing a recent resurgence in generic/388 recovery failure and/or corruption events. The events have largely been uninitialised inode chunks being tripped over in log recovery such as: XFS (pmem1): User initiated shutdown received. pmem1: writeback error on inode 12621949, offset 1019904, sector 12968096 XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS (pmem1): Please unmount the filesystem and rectify the problem(s) XFS (pmem1): Unmounting Filesystem XFS (pmem1): Mounting V5 Filesystem XFS (pmem1): Starting recovery (logdev: internal) XFS (pmem1): bad inode magic/vsn daddr 8723584 #0 (magic=1818) XFS (pmem1): Metadata corruption detected at xfs_inode_buf_verify+0x180/0x190, xfs_inode block 0x851c80 xfs_inode_buf_verify XFS (pmem1): Unmount and run xfs_repair XFS (pmem1): First 128 bytes of corrupted metadata buffer: 00000000: 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 ................ 00000010: 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 ................ 00000020: 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 ................ 00000030: 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 ................ 00000040: 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 ................ 00000050: 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 ................ 00000060: 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 ................ 00000070: 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 ................ XFS (pmem1): metadata I/O error in "xlog_recover_items_pass2+0x52/0xc0" at daddr 0x851c80 len 32 error 117 XFS (pmem1): log mount/recovery failed: error -117 XFS (pmem1): log mount failed There have been isolated random other issues, too - xfs_repair fails because it finds some corruption in symlink blocks, rmap inconsistencies, etc - but they are nowhere near as common as the uninitialised inode chunk failure. The problem has clearly happened at runtime before recovery has run; I can see the ICREATE log item in the log shortly before the actively recovered range of the log. This means the ICREATE was definitely created and written to the log, but for some reason the tail of the log has been moved past the ordered buffer log item that tracks INODE_ALLOC buffers and, supposedly, prevents the tail of the log moving past the ICREATE log item before the inode chunk buffer is written to disk. Tracing the fsstress processes that are running when the filesystem shut down immediately pin-pointed the problem: user shutdown marks xfs_mount as shutdown godown-213341 [008] 6398.022871: console: [ 6397.915392] XFS (pmem1): User initiated shutdown received. ..... aild tries to push ordered inode cluster buffer xfsaild/pmem1-213314 [001] 6398.022974: xfs_buf_trylock: dev 259:1 daddr 0x851c80 bbcount 0x20 hold 16 pincount 0 lock 0 flags DONE|INODES|PAGES caller xfs_inode_item_push+0x8e xfsaild/pmem1-213314 [001] 6398.022976: xfs_ilock_nowait: dev 259:1 ino 0x851c80 flags ILOCK_SHARED caller xfs_iflush_cluster+0xae xfs_iflush_cluster() checks xfs_is_shutdown(), returns true, calls xfs_iflush_abort() to kill writeback of the inode. Inode is removed from AIL, drops cluster buffer reference. xfsaild/pmem1-213314 [001] 6398.022977: xfs_ail_delete: dev 259:1 lip 0xffff88880247ed80 old lsn 7/20344 new lsn 7/21000 type XFS_LI_INODE flags IN_AIL xfsaild/pmem1-213314 [001] 6398.022978: xfs_buf_rele: dev 259:1 daddr 0x851c80 bbcount 0x20 hold 17 pincount 0 lock 0 flags DONE|INODES|PAGES caller xfs_iflush_abort+0xd7 ..... All inodes on cluster buffer are aborted, then the cluster buffer itself is aborted and removed from the AIL *without writeback*: xfsaild/pmem1-213314 [001] 6398.023011: xfs_buf_error_relse: dev 259:1 daddr 0x851c80 bbcount 0x20 hold 2 pincount 0 lock 0 flags ASYNC|DONE|STALE|INODES|PAGES caller xfs_buf_ioend_fail+0x33 xfsaild/pmem1-213314 [001] 6398.023012: xfs_ail_delete: dev 259:1 lip 0xffff8888053efde8 old lsn 7/20344 new lsn 7/20344 type XFS_LI_BUF flags IN_AIL The inode buffer was at 7/20344 when it was removed from the AIL. xfsaild/pmem1-213314 [001] 6398.023012: xfs_buf_item_relse: dev 259:1 daddr 0x851c80 bbcount 0x20 hold 2 pincount 0 lock 0 flags ASYNC|DONE|STALE|INODES|PAGES caller xfs_buf_item_done+0x31 xfsaild/pmem1-213314 [001] 6398.023012: xfs_buf_rele: dev 259:1 daddr 0x851c80 bbcount 0x20 hold 2 pincount 0 lock 0 flags ASYNC|DONE|STALE|INODES|PAGES caller xfs_buf_item_relse+0x39 ..... Userspace is still running, doing stuff. an fsstress process runs syncfs() or sync() and we end up in sync_fs_one_sb() which issues a log force. This pushes on the CIL: fsstress-213322 [001] 6398.024430: xfs_fs_sync_fs: dev 259:1 m_features 0x20000000019ff6e9 opstate (clean|shutdown|inodegc|blockgc) s_flags 0x70810000 caller sync_fs_one_sb+0x26 fsstress-213322 [001] 6398.024430: xfs_log_force: dev 259:1 lsn 0x0 caller xfs_fs_sync_fs+0x82 fsstress-213322 [001] 6398.024430: xfs_log_force: dev 259:1 lsn 0x5f caller xfs_log_force+0x7c <...>-194402 [001] 6398.024467: kmem_alloc: size 176 flags 0x14 caller xlog_cil_push_work+0x9f And the CIL fills up iclogs with pending changes. This picks up the current tail from the AIL: <...>-194402 [001] 6398.024497: xlog_iclog_get_space: dev 259:1 state XLOG_STATE_ACTIVE refcnt 1 offset 0 lsn 0x0 flags caller xlog_write+0x149 <...>-194402 [001] 6398.024498: xlog_iclog_switch: dev 259:1 state XLOG_STATE_ACTIVE refcnt 1 offset 0 lsn 0x700005408 flags caller xlog_state_get_iclog_space+0x37e <...>-194402 [001] 6398.024521: xlog_iclog_release: dev 259:1 state XLOG_STATE_WANT_SYNC refcnt 1 offset 32256 lsn 0x700005408 flags caller xlog_write+0x5f9 <...>-194402 [001] 6398.024522: xfs_log_assign_tail_lsn: dev 259:1 new tail lsn 7/21000, old lsn 7/20344, last sync 7/21448 And it moves the tail of the log to 7/21000 from 7/20344. This *moves the tail of the log beyond the ICREATE transaction* that was at 7/20344 and pinned by the inode cluster buffer that was cancelled above. .... godown-213341 [008] 6398.027005: xfs_force_shutdown: dev 259:1 tag logerror flags log_io|force_umount file fs/xfs/xfs_fsops.c line_num 500 godown-213341 [008] 6398.027022: console: [ 6397.915406] pmem1: writeback error on inode 12621949, offset 1019904, sector 12968096 godown-213341 [008] 6398.030551: console: [ 6397.919546] XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/ And finally the log itself is now shutdown, stopping all further writes to the log. But this is too late to prevent the corruption that moving the tail of the log forwards after we start cancelling writeback causes. The fundamental problem here is that we are using the wrong shutdown checks for log items. We've long conflated mount shutdown with log shutdown state, and I started separating that recently with the atomic shutdown state changes in commit b36d4651e165 ("xfs: make forced shutdown processing atomic"). The changes in that commit series are directly responsible for being able to diagnose this issue because it clearly separated mount shutdown from log shutdown. Essentially, once we start cancelling writeback of log items and removing them from the AIL because the filesystem is shut down, we *cannot* update the journal because we may have cancelled the items that pin the tail of the log. That moves the tail of the log forwards without having written the metadata back, hence we have corrupt in memory state and writing to the journal propagates that to the on-disk state. What commit b36d4651e165 makes clear is that log item state needs to change relative to log shutdown, not mount shutdown. IOWs, anything that aborts metadata writeback needs to check log shutdown state because log items directly affect log consistency. Having them check mount shutdown state introduces the above race condition where we cancel metadata writeback before the log shuts down. To fix this, this patch works through all log items and converts shutdown checks to use xlog_is_shutdown() rather than xfs_is_shutdown(), so that we don't start aborting metadata writeback before we shut off journal writes. AFAICT, this race condition is a zero day IO error handling bug in XFS that dates back to the introduction of XLOG_IO_ERROR, XLOG_STATE_IOERROR and XFS_FORCED_SHUTDOWN back in January 1997. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2022-03-20xfs: AIL should be log centricDave Chinner
The AIL operates purely on log items, so it is a log centric subsystem. Divorce it from the xfs_mount and instead have it pass around xlog pointers. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Chandan Babu R <chandan.babu@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2022-03-20xfs: log items should have a xlog pointer, not a mountDave Chinner
Log items belong to the log, not the xfs_mount. Convert the mount pointer in the log item to a xlog pointer in preparation for upcoming log centric changes to the log items. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Chandan Babu R <chandan.babu@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2022-03-20xfs: async CIL flushes need pending pushes to be made stableDave Chinner
When the AIL tries to flush the CIL, it relies on the CIL push ending up on stable storage without having to wait for and manipulate iclog state directly. However, if there is already a pending CIL push when the AIL tries to flush the CIL, it won't set the cil->xc_push_commit_stable flag and so the CIL push will not actively flush the commit record iclog. generic/530 when run on a single CPU test VM can trigger this fairly reliably. This test exercises unlinked inode recovery, and can result in inodes being pinned in memory by ongoing modifications to the inode cluster buffer to record unlinked list modifications. As a result, the first inode unlinked in a buffer can pin the tail of the log whilst the inode cluster buffer is pinned by the current checkpoint that has been pushed but isn't on stable storage because because the cil->xc_push_commit_stable was not set. This results in the log/AIL effectively deadlocking until something triggers the commit record iclog to be pushed to stable storage (i.e. the periodic log worker calling xfs_log_force()). The fix is two-fold - first we should always set the cil->xc_push_commit_stable when xlog_cil_flush() is called, regardless of whether there is already a pending push or not. Second, if the CIL is empty, we should trigger an iclog flush to ensure that the iclogs of the last checkpoint have actually been submitted to disk as that checkpoint may not have been run under stable completion constraints. Reported-and-tested-by: Matthew Wilcox <willy@infradead.org> Fixes: 0020a190cf3e ("xfs: AIL needs asynchronous CIL forcing") Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2022-03-20xfs: xfs_ail_push_all_sync() stalls when racing with updatesDave Chinner
xfs_ail_push_all_sync() has a loop like this: while max_ail_lsn { prepare_to_wait(ail_empty) target = max_ail_lsn wake_up(ail_task); schedule() } Which is designed to sleep until the AIL is emptied. When xfs_ail_update_finish() moves the tail of the log, it does: if (list_empty(&ailp->ail_head)) wake_up_all(&ailp->ail_empty); So it will only wake up the sync push waiter when the AIL goes empty. If, by the time the push waiter has woken, the AIL has more in it, it will reset the target, wake the push task and go back to sleep. The problem here is that if the AIL is having items added to it when xfs_ail_push_all_sync() is called, then they may get inserted into the AIL at a LSN higher than the target LSN. At this point, xfsaild_push() will see that the target is X, the item LSNs are (X+N) and skip over them, hence never pushing the out. The result of this the AIL will not get emptied by the AIL push thread, hence xfs_ail_finish_update() will never see the AIL being empty even if it moves the tail. Hence xfs_ail_push_all_sync() never gets woken and hence cannot update the push target to capture the items beyond the current target on the LSN. This is a TOCTOU type of issue so the way to avoid it is to not use the push target at all for sync pushes. We know that a sync push is being requested by the fact the ail_empty wait queue is active, hence the xfsaild can just set the target to max_ail_lsn on every push that we see the wait queue active. Hence we no longer will leave items on the AIL that are beyond the LSN sampled at the start of a sync push. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Chandan Babu R <chandan.babu@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2022-03-20xfs: check buffer pin state after locking in delwri_submitDave Chinner
AIL flushing can get stuck here: [316649.005769] INFO: task xfsaild/pmem1:324525 blocked for more than 123 seconds. [316649.007807] Not tainted 5.17.0-rc6-dgc+ #975 [316649.009186] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [316649.011720] task:xfsaild/pmem1 state:D stack:14544 pid:324525 ppid: 2 flags:0x00004000 [316649.014112] Call Trace: [316649.014841] <TASK> [316649.015492] __schedule+0x30d/0x9e0 [316649.017745] schedule+0x55/0xd0 [316649.018681] io_schedule+0x4b/0x80 [316649.019683] xfs_buf_wait_unpin+0x9e/0xf0 [316649.021850] __xfs_buf_submit+0x14a/0x230 [316649.023033] xfs_buf_delwri_submit_buffers+0x107/0x280 [316649.024511] xfs_buf_delwri_submit_nowait+0x10/0x20 [316649.025931] xfsaild+0x27e/0x9d0 [316649.028283] kthread+0xf6/0x120 [316649.030602] ret_from_fork+0x1f/0x30 in the situation where flushing gets preempted between the unpin check and the buffer trylock under nowait conditions: blk_start_plug(&plug); list_for_each_entry_safe(bp, n, buffer_list, b_list) { if (!wait_list) { if (xfs_buf_ispinned(bp)) { pinned++; continue; } Here >>>>>> if (!xfs_buf_trylock(bp)) continue; This means submission is stuck until something else triggers a log force to unpin the buffer. To get onto the delwri list to begin with, the buffer pin state has already been checked, and hence it's relatively rare we get a race between flushing and encountering a pinned buffer in delwri submission to begin with. Further, to increase the pin count the buffer has to be locked, so the only way we can hit this race without failing the trylock is to be preempted between the pincount check seeing zero and the trylock being run. Hence to avoid this problem, just invert the order of trylock vs pin check. We shouldn't hit that many pinned buffers here, so optimising away the trylock for pinned buffers should not matter for performance at all. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Chandan Babu R <chandan.babu@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2022-03-20xfs: log worker needs to start before intent/unlink recoveryDave Chinner
After 963 iterations of generic/530, it deadlocked during recovery on a pinned inode cluster buffer like so: XFS (pmem1): Starting recovery (logdev: internal) INFO: task kworker/8:0:306037 blocked for more than 122 seconds. Not tainted 5.17.0-rc6-dgc+ #975 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/8:0 state:D stack:13024 pid:306037 ppid: 2 flags:0x00004000 Workqueue: xfs-inodegc/pmem1 xfs_inodegc_worker Call Trace: <TASK> __schedule+0x30d/0x9e0 schedule+0x55/0xd0 schedule_timeout+0x114/0x160 __down+0x99/0xf0 down+0x5e/0x70 xfs_buf_lock+0x36/0xf0 xfs_buf_find+0x418/0x850 xfs_buf_get_map+0x47/0x380 xfs_buf_read_map+0x54/0x240 xfs_trans_read_buf_map+0x1bd/0x490 xfs_imap_to_bp+0x4f/0x70 xfs_iunlink_map_ino+0x66/0xd0 xfs_iunlink_map_prev.constprop.0+0x148/0x2f0 xfs_iunlink_remove_inode+0xf2/0x1d0 xfs_inactive_ifree+0x1a3/0x900 xfs_inode_unlink+0xcc/0x210 xfs_inodegc_worker+0x1ac/0x2f0 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> task:mount state:D stack:13248 pid:324509 ppid:324233 flags:0x00004000 Call Trace: <TASK> __schedule+0x30d/0x9e0 schedule+0x55/0xd0 schedule_timeout+0x114/0x160 __down+0x99/0xf0 down+0x5e/0x70 xfs_buf_lock+0x36/0xf0 xfs_buf_find+0x418/0x850 xfs_buf_get_map+0x47/0x380 xfs_buf_read_map+0x54/0x240 xfs_trans_read_buf_map+0x1bd/0x490 xfs_imap_to_bp+0x4f/0x70 xfs_iget+0x300/0xb40 xlog_recover_process_one_iunlink+0x4c/0x170 xlog_recover_process_iunlinks.isra.0+0xee/0x130 xlog_recover_finish+0x57/0x110 xfs_log_mount_finish+0xfc/0x1e0 xfs_mountfs+0x540/0x910 xfs_fs_fill_super+0x495/0x850 get_tree_bdev+0x171/0x270 xfs_fs_get_tree+0x15/0x20 vfs_get_tree+0x24/0xc0 path_mount+0x304/0xba0 __x64_sys_mount+0x108/0x140 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae </TASK> task:xfsaild/pmem1 state:D stack:14544 pid:324525 ppid: 2 flags:0x00004000 Call Trace: <TASK> __schedule+0x30d/0x9e0 schedule+0x55/0xd0 io_schedule+0x4b/0x80 xfs_buf_wait_unpin+0x9e/0xf0 __xfs_buf_submit+0x14a/0x230 xfs_buf_delwri_submit_buffers+0x107/0x280 xfs_buf_delwri_submit_nowait+0x10/0x20 xfsaild+0x27e/0x9d0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 We have the mount process waiting on an inode cluster buffer read, inodegc doing unlink waiting on the same inode cluster buffer, and the AIL push thread blocked in writeback waiting for the inode cluster buffer to become unpinned. What has happened here is that the AIL push thread has raced with the inodegc process modifying, committing and pinning the inode cluster buffer here in xfs_buf_delwri_submit_buffers() here: blk_start_plug(&plug); list_for_each_entry_safe(bp, n, buffer_list, b_list) { if (!wait_list) { if (xfs_buf_ispinned(bp)) { pinned++; continue; } Here >>>>>> if (!xfs_buf_trylock(bp)) continue; Basically, the AIL has found the buffer wasn't pinned and got the lock without blocking, but then the buffer was pinned. This implies the processing here was pre-empted between the pin check and the lock, because the pin count can only be increased while holding the buffer locked. Hence when it has gone to submit the IO, it has blocked waiting for the buffer to be unpinned. With all executing threads now waiting on the buffer to be unpinned, we normally get out of situations like this via the background log worker issuing a log force which will unpinned stuck buffers like this. But at this point in recovery, we haven't started the log worker. In fact, the first thing we do after processing intents and unlinked inodes is *start the log worker*. IOWs, we start it too late to have it break deadlocks like this. Avoid this and any other similar deadlock vectors in intent and unlinked inode recovery by starting the log worker before we recover intents and unlinked inodes. This part of recovery runs as though the filesystem is fully active, so we really should have the same infrastructure running as we normally do at runtime. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Chandan Babu R <chandan.babu@oracle.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
2022-03-20io_uring: recycle provided before arming pollJens Axboe
We currently have a race where we recycle the selected buffer if poll returns IO_APOLL_OK. But that's too late, as the poll could already be triggering or have triggered. If that race happens, then we're putting a buffer that's already being used. Fix this by recycling before we arm poll. This does mean that we'll sometimes almost instantly re-select the buffer, but it's rare enough in testing that it should not pose a performance issue. Fixes: b1c62645758e ("io_uring: recycle provided buffers if request goes async") Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-03-18cifs: use a different reconnect helper for non-cifsd threadsShyam Prasad N
The cifs_demultiplexer_thread should only call cifs_reconnect. If any other thread wants to trigger a reconnect, they can do so by updating the server tcpStatus to CifsNeedReconnect. The last patch attempted to use the same helper function for both types of threads, but that causes other issues with lock dependencies. This patch creates a new helper for non-cifsd threads, that will indicate to cifsd that the server needs reconnect. Fixes: 2a05137a0575 ("cifs: mark sessions for reconnection in helper function") Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-03-18cifs: we do not need a spinlock around the tree access during umountRonnie Sahlberg
Remove the spinlock around the tree traversal as we are calling possibly sleeping functions. We do not need a spinlock here as there will be no modifications to this tree at this point. This prevents warnings like this to occur in dmesg: [ 653.774996] BUG: sleeping function called from invalid context at kernel/loc\ king/mutex.c:280 [ 653.775088] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1827, nam\ e: umount [ 653.775152] preempt_count: 1, expected: 0 [ 653.775191] CPU: 0 PID: 1827 Comm: umount Tainted: G W OE 5.17.0\ -rc7-00006-g4eb628dd74df #135 [ 653.775195] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-\ 1.fc33 04/01/2014 [ 653.775197] Call Trace: [ 653.775199] <TASK> [ 653.775202] dump_stack_lvl+0x34/0x44 [ 653.775209] __might_resched.cold+0x13f/0x172 [ 653.775213] mutex_lock+0x75/0xf0 [ 653.775217] ? __mutex_lock_slowpath+0x10/0x10 [ 653.775220] ? _raw_write_lock_irq+0xd0/0xd0 [ 653.775224] ? dput+0x6b/0x360 [ 653.775228] cifs_kill_sb+0xff/0x1d0 [cifs] [ 653.775285] deactivate_locked_super+0x85/0x130 [ 653.775289] cleanup_mnt+0x32c/0x4d0 [ 653.775292] ? path_umount+0x228/0x380 [ 653.775296] task_work_run+0xd8/0x180 [ 653.775301] exit_to_user_mode_loop+0x152/0x160 [ 653.775306] exit_to_user_mode_prepare+0x89/0xd0 [ 653.775315] syscall_exit_to_user_mode+0x12/0x30 [ 653.775322] do_syscall_64+0x48/0x90 [ 653.775326] entry_SYSCALL_64_after_hwframe+0x44/0xae Fixes: 187af6e98b44e5d8f25e1d41a92db138eb54416f ("cifs: fix handlecache and multiuser") Reported-by: kernel test robot <oliver.sang@intel.com> Cc: stable@vger.kernel.org Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-03-18Adjust cifssb maximum read sizeRohith Surabattula
When session gets reconnected during mount then read size in super block fs context gets set to zero and after negotiate, rsize is not modified which results in incorrect read with requested bytes as zero. Fixes intermittent failure of xfstest generic/240 Note that stable requires a different version of this patch which will be sent to the stable mailing list. Signed-off-by: Rohith Surabattula <rohiths@microsoft.com> Acked-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-03-18cifs: truncate the inode and mapping when we simulate fcollapseRonnie Sahlberg
RHBZ:1997367 When we collapse a range in smb3_collapse_range() we must make sure we update the inode size and pagecache accordingly. If not, both inode size and pagecahce may be stale until it is refreshed. This can be demonstrated for the inode size by running : xfs_io -i -f -c "truncate 320k" -c "fcollapse 64k 128k" -c "fiemap -v" \ /mnt/testfile where we can see the result of stale data in the fiemap output. The third line of the output is wrong, all this data should be truncated. EXT: FILE-OFFSET BLOCK-RANGE TOTAL FLAGS 0: [0..127]: hole 128 1: [128..383]: 128..383 256 0x1 2: [384..639]: hole 256 And the correct output, when the inode size has been updated correctly should look like this: EXT: FILE-OFFSET BLOCK-RANGE TOTAL FLAGS 0: [0..127]: hole 128 1: [128..383]: 128..383 256 0x1 Reported-by: Xiaoli Feng <xifeng@redhat.com> Reported-by: kernel test robot <lkp@intel.com> Cc: stable@vger.kernel.org Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2022-03-18cifs: fix handlecache and multiuserRonnie Sahlberg
In multiuser each individual user has their own tcon structure for the share and thus their own handle for a cached directory. When we umount such a share we much make sure to release the pinned down dentry for each such tcon and not just the master tcon. Otherwise we will get nasty warnings on umount that dentries are still in use: [ 3459.590047] BUG: Dentry 00000000115c6f41{i=12000000019d95,n=/} still in use\ (2) [unmount of cifs cifs] ... [ 3459.590492] Call Trace: [ 3459.590500] d_walk+0x61/0x2a0 [ 3459.590518] ? shrink_lock_dentry.part.0+0xe0/0xe0 [ 3459.590526] shrink_dcache_for_umount+0x49/0x110 [ 3459.590535] generic_shutdown_super+0x1a/0x110 [ 3459.590542] kill_anon_super+0x14/0x30 [ 3459.590549] cifs_kill_sb+0xf5/0x104 [cifs] [ 3459.590773] deactivate_locked_super+0x36/0xa0 [ 3459.590782] cleanup_mnt+0x131/0x190 [ 3459.590789] task_work_run+0x5c/0x90 [ 3459.590798] exit_to_user_mode_loop+0x151/0x160 [ 3459.590809] exit_to_user_mode_prepare+0x83/0xd0 [ 3459.590818] syscall_exit_to_user_mode+0x12/0x30 [ 3459.590828] do_syscall_64+0x48/0x90 [ 3459.590833] entry_SYSCALL_64_after_hwframe+0x44/0xae Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Acked-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Cc: stable@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com>
2022-03-18Merge tag '5.17-rc8-smb3-fix' of git://git.samba.org/sfrench/cifs-2.6Linus Torvalds
Pull cifs fix from Steve French: "Small fix for regression in multiuser mounts. The additional improvements suggested by Ronnie to make the server and session status handling code easier to read can wait for the 5.18 merge window." * tag '5.17-rc8-smb3-fix' of git://git.samba.org/sfrench/cifs-2.6: smb3: fix incorrect session setup check for multiuser mounts
2022-03-18io_uring: terminate manual loop iterator loop correctly for non-vecsJens Axboe
The fix for not advancing the iterator if we're using fixed buffers is broken in that it can hit a condition where we don't terminate the loop. This results in io-wq looping forever, asking to read (or write) 0 bytes for every subsequent loop. Reported-by: Joel Jaeschke <joel.jaeschke@gmail.com> Link: https://github.com/axboe/liburing/issues/549 Fixes: 16c8d2df7ec0 ("io_uring: ensure symmetry in handling iter types in loop_rw_iter()") Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-03-18binfmt_elf: Don't write past end of notes for regset gapRick Edgecombe
In fill_thread_core_info() the ptrace accessible registers are collected to be written out as notes in a core file. The note array is allocated from a size calculated by iterating the user regset view, and counting the regsets that have a non-zero core_note_type. However, this only allows for there to be non-zero core_note_type at the end of the regset view. If there are any gaps in the middle, fill_thread_core_info() will overflow the note allocation, as it iterates over the size of the view and the allocation would be smaller than that. There doesn't appear to be any arch that has gaps such that they exceed the notes allocation, but the code is brittle and tries to support something it doesn't. It could be fixed by increasing the allocation size, but instead just have the note collecting code utilize the array better. This way the allocation can stay smaller. Even in the case of no arch's that have gaps in their regset views, this introduces a change in the resulting indicies of t->notes. It does not introduce any changes to the core file itself, because any blank notes are skipped in write_note_info(). In case, the allocation logic between fill_note_info() and fill_thread_core_info() ever diverges from the usage logic, warn and skip writing any notes that would overflow the array. This fix is derrived from an earlier one[0] by Yu-cheng Yu. [0] https://lore.kernel.org/lkml/20180717162502.32274-1-yu-cheng.yu@intel.com/ Co-developed-by: Yu-cheng Yu <yu-cheng.yu@intel.com> Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com> Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20220317192013.13655-4-rick.p.edgecombe@intel.com
2022-03-18io_uring: don't check unrelated req->open.how in accept requestJens Axboe
Looks like a victim of too much copy/paste, we should not be looking at req->open.how in accept. The point is to check CLOEXEC and error out, which we don't invalid direct descriptors on exec. Hence any attempt to get a direct descriptor with CLOEXEC is invalid. No harm is done here, as req->open.how.flags overlaps with req->accept.flags, but it's very confusing and might change if either of those command structs are modified. Fixes: aaa4db12ef7b ("io_uring: accept directly into fixed file table") Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-03-18f2fs: use aggressive GC policy during f2fs_disable_checkpoint()Chao Yu
Let's enable GC_URGENT_HIGH mode during f2fs_disable_checkpoint(), so that we can use SSR allocator for GCed data/node persistence, it can improve the performance due to it avoiding migration of data/node locates in selected target segment of SSR allocator. Signed-off-by: Chao Yu <chao.yu@oppo.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2022-03-18f2fs: fix compressed file start atomic write may cause data corruptionFengnan Chang
When compressed file has blocks, f2fs_ioc_start_atomic_write will succeed, but compressed flag will be remained in inode. If write partial compreseed cluster and commit atomic write will cause data corruption. This is the reproduction process: Step 1: create a compressed file ,write 64K data , call fsync(), then the blocks are write as compressed cluster. Step2: iotcl(F2FS_IOC_START_ATOMIC_WRITE) --- this should be fail, but not. write page 0 and page 3. iotcl(F2FS_IOC_COMMIT_ATOMIC_WRITE) -- page 0 and 3 write as normal file, Step3: drop cache. read page 0-4 -- Since page 0 has a valid block address, read as non-compressed cluster, page 1 and 2 will be filled with compressed data or zero. The root cause is, after commit 7eab7a696827 ("f2fs: compress: remove unneeded read when rewrite whole cluster"), in step 2, f2fs_write_begin() only set target page dirty, and in f2fs_commit_inmem_pages(), we will write partial raw pages into compressed cluster, result in corrupting compressed cluster layout. Fixes: 4c8ff7095bef ("f2fs: support data compression") Fixes: 7eab7a696827 ("f2fs: compress: remove unneeded read when rewrite whole cluster") Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Fengnan Chang <changfengnan@vivo.com> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2022-03-18kernfs: fix typos in commentsJulia Lawall
Various spelling mistakes in comments. Detected with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Link: https://lore.kernel.org/r/20220314115354.144023-5-Julia.Lawall@inria.fr Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-18afs: Maintain netfs_i_context::remote_i_sizeDavid Howells
Make afs use netfslib's tracking for the server's idea of what the current inode size is independently of inode->i_size. We really want to use this value when calculating the new vnode size when initiating a StoreData RPC op rather than the size stat() presents to the user (ie. inode->i_size) as the latter is affected by as-yet uncommitted writes. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com cc: linux-afs@lists.infradead.org Link: https://lore.kernel.org/r/164623014626.3564931.8375344024648265358.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678220204.1200972.17408022517463940584.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692923592.2099075.5466132542956550401.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Split some core bits out into their own fileDavid Howells
Split some core bits out into their own file. More bits will be added to this file later. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/164623006934.3564931.17932680017894039748.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678218407.1200972.1731208226140990280.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692920944.2099075.11990502173226013856.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Split fs/netfs/read_helper.cDavid Howells
Split fs/netfs/read_helper.c into two pieces, one to deal with buffered writes and one to deal with the I/O mechanism. Changes ======= ver #2) - Add kdoc reference to new file. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/164623005586.3564931.6149556072728481767.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678217075.1200972.5101072043126828757.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692919953.2099075.7156989585513833046.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Rename read_helper.c to io.cDavid Howells
Rename the read_helper.c file to io.c before splitting out the buffered read functions and some other bits. Changes ======= ver #2) - Rename read_helper.c before splitting. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/164678216109.1200972.16567696909952495832.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692918076.2099075.8120961172717347610.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Prepare to split read_helper.cDavid Howells
Rename netfs_rreq_unlock() to netfs_rreq_unlock_folios() to make it sound less like it's dropping a lock on an netfs_io_request struct. Remove the 'static' marker on netfs_rreq_unlock_folios() and declaring it in internal.h preparatory to splitting the file. Changes ======= ver #2) - Slide this patch to after the one adding netfs_begin_read(). - As a consequence, don't need to unstatic so many functions. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/164623002861.3564931.17340149482236413375.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678215208.1200972.9761906209395002182.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692912709.2099075.4349905992838317797.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Add a function to consolidate beginning a readDavid Howells
Add a function to do the steps needed to begin a read request, allowing this code to be removed from several other functions and consolidated. Changes ======= ver #2) - Move before the unstaticking patch so that some functions can be left static. - Set uninitialised return code in netfs_begin_read()[1][2]. - Fixed a refleak caused by non-removal of a get from netfs_write_begin() when the request submission code got moved to netfs_begin_read(). - Use INIT_WORK() to (re-)init the request work_struct[3]. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/20220303163826.1120936-1-nathan@kernel.org/ [1] Link: https://lore.kernel.org/r/20220303235647.1297171-1-colin.i.king@gmail.com/ [2] Link: https://lore.kernel.org/r/9d69be49081bccff44260e4c6e0049c63d6d04a1.camel@redhat.com/ [3] Link: https://lore.kernel.org/r/164623004355.3564931.7275693529042495641.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678214287.1200972.16734134007649832160.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692911113.2099075.1060868473229451371.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Add a netfs inode contextDavid Howells
Add a netfs_i_context struct that should be included in the network filesystem's own inode struct wrapper, directly after the VFS's inode struct, e.g.: struct my_inode { struct { /* These must be contiguous */ struct inode vfs_inode; struct netfs_i_context netfs_ctx; }; }; The netfs_i_context struct so far contains a single field for the network filesystem to use - the cache cookie: struct netfs_i_context { ... struct fscache_cookie *cache; }; Three functions are provided to help with this: (1) void netfs_i_context_init(struct inode *inode, const struct netfs_request_ops *ops); Initialise the netfs context and set the operations. (2) struct netfs_i_context *netfs_i_context(struct inode *inode); Find the netfs context from the VFS inode. (3) struct inode *netfs_inode(struct netfs_i_context *ctx); Find the VFS inode from the netfs context. Changes ======= ver #4) - Fix netfs_is_cache_enabled() to check cookie->cache_priv to see if a cache is present[3]. - Fix netfs_skip_folio_read() to zero out all of the page, not just some of it[3]. ver #3) - Split out the bit to move ceph cap-getting on readahead into ceph_init_request()[1]. - Stick in a comment to the netfs inode structs indicating the contiguity requirements[2]. ver #2) - Adjust documentation to match. - Use "#if IS_ENABLED()" in netfs_i_cookie(), not "#ifdef". - Move the cap check from ceph_readahead() to ceph_init_request() to be called from netfslib. - Remove ceph_readahead() and use netfs_readahead() directly instead. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/8af0d47f17d89c06bbf602496dd845f2b0bf25b3.camel@kernel.org/ [1] Link: https://lore.kernel.org/r/beaf4f6a6c2575ed489adb14b257253c868f9a5c.camel@kernel.org/ [2] Link: https://lore.kernel.org/r/3536452.1647421585@warthog.procyon.org.uk/ [3] Link: https://lore.kernel.org/r/164622984545.3564931.15691742939278418580.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678213320.1200972.16807551936267647470.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692909854.2099075.9535537286264248057.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/306388.1647595110@warthog.procyon.org.uk/ # v4
2022-03-18ceph: Make ceph_init_request() check caps on readaheadDavid Howells
Move the caps check from ceph_readahead() to ceph_init_request(), conditional on the origin being NETFS_READAHEAD so that in a future patch, ceph can point its ->readahead() vector directly at netfs_readahead(). Changes ======= ver #4) - Move the check for NETFS_READAHEAD up in ceph_init_request()[2]. ver #3) - Split from the patch to add a netfs inode context[1]. - Need to store the caps got in rreq->netfs_priv for later freeing. Signed-off-by: David Howells <dhowells@redhat.com> cc: ceph-devel@vger.kernel.org cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/8af0d47f17d89c06bbf602496dd845f2b0bf25b3.camel@kernel.org/ [1] Link: https://lore.kernel.org/r/dd054c962818716e718bd9b446ee5322ca097675.camel@redhat.com/ [2] Link: https://lore.kernel.org/r/164692907694.2099075.10081819855690054094.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/2533821.1647006574@warthog.procyon.org.uk/ # v4
2022-03-18netfs: Change ->init_request() to return an error codeDavid Howells
Change the request initialisation function to return an error code so that the network filesystem can return a failure (ENOMEM, for example). This will also allow ceph to abort a ->readahead() op if the server refuses to give it a cap allowing local caching from within the netfslib framework (errors aren't passed back through ->readahead(), so returning, say, -ENOBUFS will cause the op to be aborted). Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/164678212401.1200972.16537041523832944934.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692905398.2099075.5238033621684646524.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Refactor arguments for netfs_alloc_read_requestDavid Howells
Pass start and len to the rreq allocator. This should ensure that the fields are set so that ->init_request() can use them. Also add a parameter to indicates the origin of the request. Ceph can use this to tell whether to get caps. Changes ======= ver #3) - Change the author to me as Jeff feels that most of the patch is my changes now. ver #2) - Show the request origin in the netfs_rreq tracepoint. Signed-off-by: Jeff Layton <jlayton@kernel.org> Co-developed-by: David Howells <dhowells@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/164622989020.3564931.17517006047854958747.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678208569.1200972.12153682697842916557.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692904155.2099075.14717645623034355995.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Trace refcounting on the netfs_io_subrequest structDavid Howells
Add refcount tracing for the netfs_io_subrequest structure. Changes ======= ver #3) - Switch 'W=' to 'R=' in the traceline to match other request debug IDs. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/164622998584.3564931.5052255990645723639.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678202603.1200972.14726007419792315578.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692901860.2099075.4845820886851239935.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Trace refcounting on the netfs_io_request structDavid Howells
Add refcount tracing for the netfs_io_request structure. Changes ======= ver #3) - Switch 'W=' to 'R=' in the traceline to match other request debug IDs. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/164622997668.3564931.14456171619219324968.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678200943.1200972.7241495532327787765.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692900920.2099075.11847712419940675791.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Adjust the netfs_rreq tracepoint slightlyDavid Howells
Adjust the netfs_rreq tracepoint to include the origin of the request and to increase the size of the "what trace" output strings by a character so that "ENCRYPT" and "DECRYPT" will fit without abbreviation. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/164622996715.3564931.4252319907990358129.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678199468.1200972.17275585970238114726.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692898684.2099075.12153225958137716567.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Split netfs_io_* object handling outDavid Howells
Split netfs_io_* object handling out into a file that's going to contain object allocation, get and put routines. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/164622995118.3564931.6089530629052064470.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678197044.1200972.11511937252083343775.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692894693.2099075.7831091294248735173.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Finish off rename of netfs_read_request to netfs_io_requestDavid Howells
Adjust helper function names and comments after mass rename of struct netfs_read_*request to struct netfs_io_*request. Changes ======= ver #2) - Make the changes in the docs also. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/164622992433.3564931.6684311087845150271.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678196111.1200972.5001114956865989528.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692892567.2099075.13895804222087028813.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Rename netfs_read_*request to netfs_io_*requestDavid Howells
Rename netfs_read_*request to netfs_io_*request so that the same structures can be used for the write helpers too. perl -p -i -e 's/netfs_read_(request|subrequest)/netfs_io_$1/g' \ `git grep -l 'netfs_read_\(sub\|\)request'` perl -p -i -e 's/nr_rd_ops/nr_outstanding/g' \ `git grep -l nr_rd_ops` perl -p -i -e 's/nr_wr_ops/nr_copy_ops/g' \ `git grep -l nr_wr_ops` perl -p -i -e 's/netfs_read_source/netfs_io_source/g' \ `git grep -l 'netfs_read_source'` perl -p -i -e 's/netfs_io_request_ops/netfs_request_ops/g' \ `git grep -l 'netfs_io_request_ops'` perl -p -i -e 's/init_rreq/init_request/g' \ `git grep -l 'init_rreq'` Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/164622988070.3564931.7089670190434315183.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678195157.1200972.366609966927368090.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692891535.2099075.18435198075367420588.stgit@warthog.procyon.org.uk/ # v3
2022-03-18fscache: export fscache_end_operation()Jeffle Xu
Export fscache_end_operation() to avoid code duplication. Besides, considering the paired fscache_begin_read_operation() is already exported, it shall make sense to also export fscache_end_operation(). Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/20220302125134.131039-2-jefflexu@linux.alibaba.com/ # Jeffle's v4 Link: https://lore.kernel.org/r/164622971432.3564931.12184135678781328146.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678190346.1200972.7453733431978569479.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692888334.2099075.5166283293894267365.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/20220316131723.111553-2-jefflexu@linux.alibaba.com/ # v5
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