- 18 1月, 2018 3 次提交
-
-
由 Luis de Bethencourt 提交于
The trailing semicolon is an empty statement that does no operation. It is completely stripped out by the compiler. Removing it since it doesn't do anything. Signed-off-by: NLuis de Bethencourt <luisbg@kernel.org> Acked-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
If we are failing the command due to a qfull timeout we are also freeing the tcmu command, so we cannot access it later to get the se_cmd. Note: The clearing of cmd->se_cmd is not needed. We do not check it later for something like determining if the command was failed due to a timeout. As a result I am dropping it. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 tangwenji 提交于
After dev->transport->configure_device succeeds, target_configure_device exits abnormally, dev_flags has not set DF_CONFIGURED yet, does not call destroy_device function in free_device. Signed-off-by: Ntangwenji <tang.wenji@zte.com.cn> Acked-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
- 17 1月, 2018 2 次提交
-
-
由 Mike Christie 提交于
This patch adds 2 tcmu attrs to block/unblock a device and reset the ring buffer. They are used when the userspace daemon has crashed or forced to shutdown while IO is executing. On restart, the daemon can block the device so new IO is not sent to userspace while it puts the ring in a clean state. Notes: The reset ring opreation is specific to tcmu, but the block one could be generic. I kept it tcmu specific, because it requires some extra locking/state checks in the main IO path and since other backend modules did not need this functionality I thought only tcmu should take the perf hit. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
This patch adds a new group of files that are to be used to have the kernel module execution some action. The next patch will have target_core_user use the group/files to be able to block a device and to reset its memory buffer used to pass commands between user/kernel space. This type of file is different from the existing device attributes in that they may be write only and when written to they result in the kernel module executing some function. These need to be separate from the normal device attributes which get/set device values so userspace can continue to loop over all the attribs and get/set them during initialization. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
- 13 1月, 2018 30 次提交
-
-
由 Wei Yongjun 提交于
Fix to return error code -ENOMEM from the kzalloc() error handling case instead of 0, as done elsewhere in this function. Fixes: 80eb8761 ("tcmu: allow max block and global max blocks to be settable") Signed-off-by: NWei Yongjun <weiyongjun1@huawei.com> Acked-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
Log cmd id that was not found in the tcmu_handle_completions lookup failure path. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
Add SAM_STAT_BUSY sense_reason. The next patch will have target_core_user return this value while it is temporarily blocked and restarting. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
We will always have a page mapped for cmd data if it is valid command. If the mapping does not exist then something bad happened in userspace and it should not proceed. This has us return VM_FAULT_SIGBUS when this happens instead of returning a freshly allocated paged. The latter can cause corruption because userspace might write the pages data overwriting valid data or return it to the initiator. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Andrei Vagin 提交于
If a length of a range is zero, it means there is nothing to unmap and we can skip this range. Here is one more reason, why we have to skip such ranges. An unmap callback calls file_operations->fallocate(), but the man page for the fallocate syscall says that fallocate(fd, mode, offset, let) returns EINVAL, if len is zero. It means that file_operations->fallocate() isn't obligated to handle zero ranges too. Signed-off-by: NAndrei Vagin <avagin@openvz.org> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 David Disseldorp 提交于
If chap_server_compute_md5() fails early, e.g. via CHAP_N mismatch, then crypto_free_shash() is called with a NULL pointer which gets dereferenced in crypto_shash_tfm(). Fixes: 69110e3c ("iscsi-target: Use shash and ahash") Suggested-by: NMarkus Elfring <elfring@users.sourceforge.net> Signed-off-by: NDavid Disseldorp <ddiss@suse.de> Cc: stable@vger.kernel.org # 4.6+ Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Varun Prakash 提交于
If nud_state is not valid then call neigh_event_send() to update MAC address. Signed-off-by: NVarun Prakash <varun@chelsio.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Markus Elfring 提交于
The script "checkpatch.pl" pointed information out like the following. WARNING: Prefer seq_puts to seq_printf Thus fix the affected source code place. Signed-off-by: NMarkus Elfring <elfring@users.sourceforge.net> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Markus Elfring 提交于
The script "checkpatch.pl" pointed information out like the following. WARNING: void function return statements are not generally useful Thus remove such a statement in the affected function. Signed-off-by: NMarkus Elfring <elfring@users.sourceforge.net> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Markus Elfring 提交于
The variables "se_cmd" and "tl_cmd" will eventually be set to appropriate pointers a bit later. Thus omit the explicit initialisation at the beginning. Signed-off-by: NMarkus Elfring <elfring@users.sourceforge.net> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Markus Elfring 提交于
The script "checkpatch.pl" pointed information out like the following. WARNING: quoted string split across lines Thus fix the affected source code places. Signed-off-by: NMarkus Elfring <elfring@users.sourceforge.net> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Markus Elfring 提交于
Replace the specification of data structures by pointer dereferences as the parameter for the operator "sizeof" to make the corresponding size determination a bit safer according to the Linux coding style convention. This issue was detected by using the Coccinelle software. Signed-off-by: NMarkus Elfring <elfring@users.sourceforge.net> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Markus Elfring 提交于
Omit an extra message for a memory allocation failure in these functions. This issue was detected by using the Coccinelle software. Signed-off-by: NMarkus Elfring <elfring@users.sourceforge.net> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Markus Elfring 提交于
Omit an extra message for a memory allocation failure in these functions. This issue was detected by using the Coccinelle software. Signed-off-by: NMarkus Elfring <elfring@users.sourceforge.net> Acked-by: NChris Boot <bootc@boo.tc> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
Users might have a physical system to a target so they could have a lot more than 2 gigs of memory they want to devote to tcmu. OTOH, we could be running in a vm and so a 2 gig global and 1 gig per dev limit might be too high. This patch allows the user to specify the limits. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
This adds a timer, qfull_time_out, that controls how long a device will wait for ring buffer space to open before failing the commands in the queue. It is useful to separate this timer from the cmd_time_out and default 30 sec one, because for HA setups cmd_time_out may be disbled and 30 seconds is too long to wait when some OSs like ESX will timeout commands after as little as 8 - 15 seconds. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
This patch has tcmu internally queue cmds if its ring buffer is full. It also makes the TCMU_GLOBAL_MAX_BLOCKS limit a hint instead of a hard limit, so we do not have to add any new locks/atomics in the main IO path except when IO is not running. This fixes the following bugs: 1. We cannot sleep from the submitting context because it might be called from a target recv context. This results in transport level commands timing out. For example if the ring is full, we would sleep, and a iscsi initiator would send a iscsi ping/nop which times out because the target's recv thread is sleeping here. 2. Devices were not fairly scheduled to run when they hit the global limit so they could time out waiting for ring space while others got run. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
We do not really save a lot by trying to increase thresh a multiple of the existing value. This just simplifies the code by increasing it to whatever is needed for the command being executed. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
In the next patches we will call queue_cmd_ring from the submitting context and also the completion path. This changes the queue_cmd_ring return code so in the next patches we can return a sense_reason_t and also signal if a command was requeued. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Xiubo Li 提交于
Add some comments to make the scatter code to be more readable, and drop unused arg to new_iov. Signed-off-by: NXiubo Li <lixiubo@cmss.chinamobile.com> Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
The blocks_left calculation does not account for free blocks between 0 and thresh, so we could be queueing/waiting when there are enough blocks free. This has us add in the blocks between 0 and thresh as well as at the end from thresh to DATA_BLOCK_BITS. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
scatter_data_area always returns 0, so stop checking for errors. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
If we cannot setup a cmd because we run out of ring space or global pages release the blocks before sleeping. This prevents a deadlock where dev0 has waiting_blocks set and needs N blocks, but dev1 to devX have each allocated N / X blocks and also hit the global block limit so they went to sleep. find_free_blocks is not able to take the sleeping dev's blocks becaause their waiting_blocks is set and even if it was not the block returned by find_last_bit could equal dbi_max. The latter will probably never happen because DATA_BLOCK_BITS is so high but in the next patches DATA_BLOCK_BITS and TCMU_GLOBAL_MAX_BLOCKS will be settable so it might be lower and could happen. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
No need for the commands_lock. The cmdr_lock is already held during idr addition and deletion, so just grab it during traversal. Note: This also fixes a issue where we should have been using at least _bh locking in tcmu_handle_completions when taking the commands lock to prevent the case where tcmu_handle_completions could be interrupted by a timer softirq while the commands_lock is held. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
This moves the expired command completion handling to the unmap wq, so the next patch can use a mutex in tcmu_check_expired_cmd. Note: tcmu_device_timedout's use of spin_lock_irq was not needed. The commands_lock is used between thread context (tcmu_queue_cmd_ring and tcmu_irqcontrol (even though this is named irqcontrol it is not run in irq context)) and timer/bh context. In the timer/bh context bhs are disabled, so you need to use the _bh lock calls from the thread context callers. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
If the unmap thread has already run find_free_blocks but not yet run prepare_to_wait when a wake_up(&unmap_wait) call is done, the unmap thread is going to miss the wake call. Instead of adding checks for if new waiters were added this just has us use a work queue which will run us again in this type of case. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
Separate unmap_thread_fn to make it easier to read. Note: this patch does not fix the bug where we might miss a wake up call. The next patch will fix that. This patch only separates the code into functions. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Mike Christie 提交于
Have unmap_thread_fn use tcmu_blocks_release. Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 tangwenji 提交于
The page addr should be update. Signed-off-by: Ntangwenji <tang.wenji@zte.com.cn> Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
由 Rasmus Villemoes 提交于
iscsi_parse_pr_out_transport_id launders the const away via a call to strstr(), and then modifies the buffer (writing a nul byte) through the return value. It's cleaner to be honest and simply declare the parameter as "char*", fixing up the call chain, and allowing us to drop the cast in the return statement. Amusingly, the two current callers found it necessary to cast a non-const pointer to a const. Signed-off-by: NRasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
-
- 01 1月, 2018 5 次提交
-
-
由 Linus Torvalds 提交于
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull x86 fixes from Thomas Gleixner: "A couple of fixlets for x86: - Fix the ESPFIX double fault handling for 5-level pagetables - Fix the commandline parsing for 'apic=' on 32bit systems and update documentation - Make zombie stack traces reliable - Fix kexec with stack canary - Fix the delivery mode for APICs which was missed when the x86 vector management was converted to single target delivery. Caused a regression due to the broken hardware which ignores affinity settings in lowest prio delivery mode. - Unbreak modules when AMD memory encryption is enabled - Remove an unused parameter of prepare_switch_to" * 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/apic: Switch all APICs to Fixed delivery mode x86/apic: Update the 'apic=' description of setting APIC driver x86/apic: Avoid wrong warning when parsing 'apic=' in X86-32 case x86-32: Fix kexec with stack canary (CONFIG_CC_STACKPROTECTOR) x86: Remove unused parameter of prepare_switch_to x86/stacktrace: Make zombie stack traces reliable x86/mm: Unbreak modules that use the DMA API x86/build: Make isoimage work on Debian x86/espfix/64: Fix espfix double-fault handling on 5-level systems
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull x86 page table isolation fixes from Thomas Gleixner: "Four patches addressing the PTI fallout as discussed and debugged yesterday: - Remove stale and pointless TLB flush invocations from the hotplug code - Remove stale preempt_disable/enable from __native_flush_tlb() - Plug the memory leak in the write_ldt() error path" * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/ldt: Make LDT pgtable free conditional x86/ldt: Plug memory leak in error path x86/mm: Remove preempt_disable/enable() from __native_flush_tlb() x86/smpboot: Remove stale TLB flush invocations
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull timer fixes from Thomas Gleixner: "A pile of fixes for long standing issues with the timer wheel and the NOHZ code: - Prevent timer base confusion accross the nohz switch, which can cause unlocked access and data corruption - Reinitialize the stale base clock on cpu hotplug to prevent subtle side effects including rollovers on 32bit - Prevent an interrupt storm when the timer softirq is already pending caused by tick_nohz_stop_sched_tick() - Move the timer start tracepoint to a place where it actually makes sense - Add documentation to timerqueue functions as they caused confusion several times now" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: timerqueue: Document return values of timerqueue_add/del() timers: Invoke timer_start_debug() where it makes sense nohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick() timers: Reinitialize per cpu bases on hotplug timers: Use deferrable base independent of base::nohz_active
-
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull smp fixlet from Thomas Gleixner: "A trivial build warning fix for newer compilers" * 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: cpu/hotplug: Move inline keyword at the beginning of declaration
-