linux/drivers/lightnvm, branch v5.7

Merge tag 'for-5.7/drivers-2020-03-29' of git://git.kernel.dk/linux-block

2020-03-30T18:43:51Z

Pull block driver updates from Jens Axboe: - floppy driver cleanup series from Willy - NVMe updates and fixes (Various) - null_blk trace improvements (Chaitanya) - bcache fixes (Coly) - md fixes (via Song) - loop block size change optimizations (Martijn) - scnprintf() use (Takashi) * tag 'for-5.7/drivers-2020-03-29' of git://git.kernel.dk/linux-block: (81 commits) null_blk: add trace in null_blk_zoned.c null_blk: add tracepoint helpers for zoned mode block: add a zone condition debug helper nvme: cleanup namespace identifier reporting in nvme_init_ns_head nvme: rename __nvme_find_ns_head to nvme_find_ns_head nvme: refactor nvme_identify_ns_descs error handling nvme-tcp: Add warning on state change failure at nvme_tcp_setup_ctrl nvme-rdma: Add warning on state change failure at nvme_rdma_setup_ctrl nvme: Fix controller creation races with teardown flow nvme: Make nvme_uninit_ctrl symmetric to nvme_init_ctrl nvme: Fix ctrl use-after-free during sysfs deletion nvme-pci: Re-order nvme_pci_free_ctrl nvme: Remove unused return code from nvme_delete_ctrl_sync nvme: Use nvme_state_terminal helper nvme: release ida resources nvme: Add compat_ioctl handler for NVME_IOCTL_SUBMIT_IO nvmet-tcp: optimize tcp stack TX when data digest is used nvme-fabrics: Use scnprintf() for avoiding potential buffer overflow nvme-multipath: do not reset on unknown status nvmet-rdma: allocate RW ctxs according to mdts ...

block: simplify queue allocation

2020-03-27T16:23:43Z

Current make_request based drivers use either blk_alloc_queue_node or blk_alloc_queue to allocate a queue, and then set up the make_request_fn function pointer and a few parameters using the blk_queue_make_request helper. Simplify this by passing the make_request pointer to blk_alloc_queue, and while at it merge the _node variant into the main helper by always passing a node_id, and remove the superfluous gfp_mask parameter. A lower-level __blk_alloc_queue is kept for the blk-mq case. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

lightnvm: pblk: Use scnprintf() for avoiding potential buffer overflow

2020-03-12T13:39:05Z

Since snprintf() returns the would-be-output size instead of the actual output size, the succeeding calls may go beyond the given buffer limit. Fix it by replacing with scnprintf(). Signed-off-by: Takashi Iwai Signed-off-by: Jens Axboe

ftrace: Rework event_create_dir()

2019-11-27T06:44:25Z

Rework event_create_dir() to use an array of static data instead of function pointers where possible. The problem is that it would call the function pointer on module load before parse_args(), possibly even before jump_labels were initialized. Luckily the generated functions don't use jump_labels but it still seems fragile. It also gets in the way of changing when we make the module map executable. The generated function are basically calling trace_define_field() with a bunch of static arguments. So instead of a function, capture these arguments in a static array, avoiding the function call. Now there are a number of cases where the fields are dynamic (syscall arguments, kprobes and uprobes), in which case a static array does not work, for these we preserve the function call. Luckily all these cases are not related to modules and so we can retain the function call for them. Also fix up all broken tracepoint definitions that now generate a compile error. Tested-by: Alexei Starovoitov Tested-by: Steven Rostedt (VMware) Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Steven Rostedt (VMware) Acked-by: Alexei Starovoitov Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Steven Rostedt Cc: Thomas Gleixner Link: https://lkml.kernel.org/r/20191111132458.342979914@infradead.org Signed-off-by: Ingo Molnar

lightnvm: print error when target is not found

2019-09-05T19:17:01Z

If userspace requests target to be removed, nvm_remove_tgt() will iterate the nvm_devices to find out the given target, but if not found, then it should print out an error. Signed-off-by: Minwoo Im Updated output string and patch description. Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: introduce pr_fmt for the prefix nvm

2019-09-05T19:16:59Z

all the pr_() family can have this prefix by pr_fmt. Signed-off-by: Minwoo Im Reviewed-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe

lightnvm: remove unused 'geo' variable

2019-08-09T04:14:04Z

A previous commit correctly removed set-but-not-read variables, but this left two new variables now unused. Kill them. Fixes: ba6f7da99aaf ("lightnvm: remove set but not used variables 'data_len' and 'rq_len'") Reported-by: Stephen Rothwell Signed-off-by: Jens Axboe

lightnvm: remove set but not used variables 'data_len' and 'rq_len'

2019-08-08T13:34:34Z

drivers/lightnvm/pblk-read.c: In function pblk_submit_read_gc: drivers/lightnvm/pblk-read.c:423:6: warning: variable data_len set but not used [-Wunused-but-set-variable] drivers/lightnvm/pblk-recovery.c: In function pblk_recov_scan_oob: drivers/lightnvm/pblk-recovery.c:368:15: warning: variable rq_len set but not used [-Wunused-but-set-variable] They are not used since commit 48e5da725581 ("lightnvm: move metadata mapping to lower level driver") Reported-by: Hulk Robot Signed-off-by: YueHaibing Signed-off-by: Jens Axboe

lightnvm: pblk: use kvmalloc for metadata

2019-08-06T14:20:10Z

There is no reason now not to use kvmalloc, so replace the internal metadata allocation scheme. Reviewed-by: Javier González Reviewed-by: Christoph Hellwig Signed-off-by: Hans Holmberg Signed-off-by: Jens Axboe

lightnvm: move metadata mapping to lower level driver

2019-08-06T14:20:10Z

Now that blk_rq_map_kern can map both kmem and vmem, move internal metadata mapping down to the lower level driver. Reviewed-by: Javier González Reviewed-by: Christoph Hellwig Signed-off-by: Hans Holmberg Signed-off-by: Jens Axboe