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* Merge branch 'for_linus' of ↵Linus Torvalds2011-05-263-15/+87
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (61 commits) jbd2: Add MAINTAINERS entry jbd2: fix a potential leak of a journal_head on an error path ext4: teach ext4_ext_split to calculate extents efficiently ext4: Convert ext4 to new truncate calling convention ext4: do not normalize block requests from fallocate() ext4: enable "punch hole" functionality ext4: add "punch hole" flag to ext4_map_blocks() ext4: punch out extents ext4: add new function ext4_block_zero_page_range() ext4: add flag to ext4_has_free_blocks ext4: reserve inodes and feature code for 'quota' feature ext4: add support for multiple mount protection ext4: ensure f_bfree returned by ext4_statfs() is non-negative ext4: protect bb_first_free in ext4_trim_all_free() with group lock ext4: only load buddy bitmap in ext4_trim_fs() when it is needed jbd2: Fix comment to match the code in jbd2__journal_start() ext4: fix waiting and sending of a barrier in ext4_sync_file() jbd2: Add function jbd2_trans_will_send_data_barrier() jbd2: fix sending of data flush on journal commit ext4: fix ext4_ext_fiemap_cb() to handle blocks before request range correctly ...
| * jbd2: fix a potential leak of a journal_head on an error pathDing Dinghua2011-05-251-1/+1
| | | | | | | | | | | | | | drop jh->b_jcount in error path Signed-off-by: Ding Dinghua <dingdinghua@nrchpc.ac.cn> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| * jbd2: Fix comment to match the code in jbd2__journal_start()Eryu Guan2011-05-241-1/+2
| | | | | | | | | | | | | | | | jbd2__journal_start() returns an ERR_PTR() value rather than NULL on failure. Signed-off-by: Eryu Guan <guaneryu@gmail.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| * jbd2: Add function jbd2_trans_will_send_data_barrier()Jan Kara2011-05-242-1/+50
| | | | | | | | | | | | | | | | | | Provide a function which returns whether a transaction with given tid will send a flush to the filesystem device. The function will be used by ext4 to detect whether fsync needs to send a separate flush or not. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| * jbd2: fix sending of data flush on journal commitJan Kara2011-05-242-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In data=ordered mode, it's theoretically possible (however rare) that an inode is filed to transaction's t_inode_list and a flusher thread writes all the data and inode is reclaimed before the transaction starts to commit. In such a case, we could erroneously omit sending a flush to file system device when it is different from the journal device (because data can still be in disk cache only). Fix the problem by setting a flag in a transaction when some inode is added to it and then send disk flush in the commit code when the flag is set. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| * jbd2: Fix the wrong calculation of t_max_wait in update_t_max_waitTao Ma2011-05-221-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | t_max_wait is added in commit 8e85fb3f to indicate how long we were waiting for new transaction to start. In commit 6d0bf005, it is moved to another function named update_t_max_wait to avoid a build warning. But the wrong thing is that the original 'ts' is initialized in the start of function start_this_handle and we can calculate t_max_wait in the right way. while with this change, ts is initialized within the function and t_max_wait can never be calculated right. This patch moves the initialization of ts to the original beginning of start_this_handle and pass it to function update_t_max_wait so that it can be calculated right and the build warning is avoided also. Cc: Jan Kara <jack@suse.cz> Signed-off-by: Tao Ma <boyu.mt@taobao.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Reviewed-by: Eric Sandeen <sandeen@redhat.com>
| * jbd2: only print the debugging information for tid wraparound onceTheodore Ts'o2011-05-081-4/+5
| | | | | | | | | | | | | | If we somehow wrap, we don't want to keep printing the warning message over and over again. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| * jbd2: Fix forever sleeping process in do_get_write_access()Jan Kara2011-05-081-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | In do_get_write_access() we wait on BH_Unshadow bit for buffer to get from shadow state. The waking code in journal_commit_transaction() has a bug because it does not issue a memory barrier after the buffer is moved from the shadow state and before wake_up_bit() is called. Thus a waitqueue check can happen before the buffer is actually moved from the shadow state and waiting process may never be woken. Fix the problem by issuing proper barrier. Reported-by: Tao Ma <boyu.mt@taobao.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| * jbd2: fix fsync() tid wraparound bugTheodore Ts'o2011-05-011-3/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If an application program does not make any changes to the indirect blocks or extent tree, i_datasync_tid will not get updated. If there are enough commits (i.e., 2**31) such that tid_geq()'s calculations wrap, and there isn't a currently active transaction at the time of the fdatasync() call, this can end up triggering a BUG_ON in fs/jbd2/commit.c: J_ASSERT(journal->j_running_transaction != NULL); It's pretty rare that this can happen, since it requires the use of fdatasync() plus *very* frequent and excessive use of fsync(). But with the right workload, it can. We fix this by replacing the use of tid_geq() with an equality test, since there's only one valid transaction id that we is valid for us to wait until it is commited: namely, the currently running transaction (if it exists). Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* | jbd/jbd2: remove obsolete summarise_journal_usage.Tao Ma2011-05-171-6/+0
|/ | | | | | | | | summarise_journal_usage seems to be obsolete for a long time, so remove it. Cc: Jan Kara <jack@suse.cz> Signed-off-by: Tao Ma <boyu.mt@taobao.com> Signed-off-by: Jan Kara <jack@suse.cz>
* Merge branch 'for_linus' of ↵Linus Torvalds2011-04-112-2/+5
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: fix data corruption regression by reverting commit 6de9843dab3f ext4: Allow indirect-block file to grow the file size to max file size ext4: allow an active handle to be started when freezing ext4: sync the directory inode in ext4_sync_parent() ext4: init timer earlier to avoid a kernel panic in __save_error_info jbd2: fix potential memory leak on transaction commit ext4: fix a double free in ext4_register_li_request ext4: fix credits computing for indirect mapped files ext4: remove unnecessary [cm]time update of quota file jbd2: move bdget out of critical section
| * jbd2: fix potential memory leak on transaction commitZhang Huan2011-04-051-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is potential memory leak of journal head in function jbd2_journal_commit_transaction. The problem is that JBD2 will not reclaim the journal head of commit record if error occurs or journal is abotred. I use the following script to reproduce this issue, on a RHEL6 system. I found it very easy to reproduce with async commit enabled. mount /dev/sdb /mnt -o journal_checksum,journal_async_commit touch /mnt/xxx echo offline > /sys/block/sdb/device/state sync umount /mnt rmmod ext4 rmmod jbd2 Removal of the jbd2 module will make slab complaining that "cache `jbd2_journal_head': can't free all objects". Signed-off-by: Zhang Huan <zhhuan@gmail.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| * jbd2: move bdget out of critical sectionZhu Yanhai2011-04-041-1/+2
| | | | | | | | | | | | | | | | | | bdget() should not be called when we hold spinlocks since it might sleep. Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Zhu Yanhai <gaoyang.zyh@taobao.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* | Fix common misspellingsLucas De Marchi2011-03-314-5/+5
|/ | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
* Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2011-03-241-12/+10
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block: (65 commits) Documentation/iostats.txt: bit-size reference etc. cfq-iosched: removing unnecessary think time checking cfq-iosched: Don't clear queue stats when preempt. blk-throttle: Reset group slice when limits are changed blk-cgroup: Only give unaccounted_time under debug cfq-iosched: Don't set active queue in preempt block: fix non-atomic access to genhd inflight structures block: attempt to merge with existing requests on plug flush block: NULL dereference on error path in __blkdev_get() cfq-iosched: Don't update group weights when on service tree fs: assign sb->s_bdi to default_backing_dev_info if the bdi is going away block: Require subsystems to explicitly allocate bio_set integrity mempool jbd2: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit plugging jbd: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit plugging fs: make fsync_buffers_list() plug mm: make generic_writepages() use plugging blk-cgroup: Add unaccounted time to timeslice_used. block: fixup plugging stubs for !CONFIG_BLOCK block: remove obsolete comments for blkdev_issue_zeroout. blktrace: Use rq->cmd_flags directly in blk_add_trace_rq. ... Fix up conflicts in fs/{aio.c,super.c}
| * jbd2: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit pluggingJens Axboe2011-03-171-10/+8
| | | | | | | | | | | | | | | | 'write_op' was still used, even though it was always WRITE_SYNC now. Add plugging around the cases where it submits IO, and flush them before we end up waiting for that IO. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * block: kill off REQ_UNPLUGJens Axboe2011-03-101-3/+3
| | | | | | | | | | | | | | | | | | | | With the plugging now being explicitly controlled by the submitter, callers need not pass down unplugging hints to the block layer. If they want to unplug, it's because they manually plugged on their own - in which case, they should just unplug at will. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* | jbd: Remove one to many n's in a word.Justin P. Mattock2011-02-281-1/+1
|/ | | | | | | | | | The Patch below removes one to many "n's" in a word.. Signed-off-by: Justin P. Mattock <justinmattock@gmail.com> CC: Andrew Morton <akpm@linux-foundation.org> CC: linux-ext4@vger.kernel.org Acked-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Jan Kara <jack@suse.cz>
* jbd2: call __jbd2_log_start_commit with j_state_lock write lockedTheodore Ts'o2011-02-122-9/+21
| | | | | | | | | | | | | | | | | On an SMP ARM system running ext4, I've received a report that the first J_ASSERT in jbd2_journal_commit_transaction has been triggering: J_ASSERT(journal->j_running_transaction != NULL); While investigating possible causes for this problem, I noticed that __jbd2_log_start_commit() is getting called with j_state_lock only read-locked, in spite of the fact that it's possible for it might j_commit_request. Fix this by grabbing the necessary information so we can test to see if we need to start a new transaction before dropping the read lock, and then calling jbd2_log_start_commit() which will grab the write lock. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* Merge branch 'for-next' of ↵Linus Torvalds2011-01-131-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits) Documentation/trace/events.txt: Remove obsolete sched_signal_send. writeback: fix global_dirty_limits comment runtime -> real-time ppc: fix comment typo singal -> signal drivers: fix comment typo diable -> disable. m68k: fix comment typo diable -> disable. wireless: comment typo fix diable -> disable. media: comment typo fix diable -> disable. remove doc for obsolete dynamic-printk kernel-parameter remove extraneous 'is' from Documentation/iostats.txt Fix spelling milisec -> ms in snd_ps3 module parameter description Fix spelling mistakes in comments Revert conflicting V4L changes i7core_edac: fix typos in comments mm/rmap.c: fix comment sound, ca0106: Fix assignment to 'channel'. hrtimer: fix a typo in comment init/Kconfig: fix typo anon_inodes: fix wrong function name in comment fix comment typos concerning "consistent" poll: fix a typo in comment ... Fix up trivial conflicts in: - drivers/net/wireless/iwlwifi/iwl-core.c (moved to iwl-legacy.c) - fs/ext4/ext4.h Also fix missed 'diabled' typo in drivers/net/bnx2x/bnx2x.h while at it.
| * Merge branch 'master' into for-nextJiri Kosina2010-12-221-12/+12
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: MAINTAINERS arch/arm/mach-omap2/pm24xx.c drivers/scsi/bfa/bfa_fcpim.c Needed to update to apply fixes for which the old branch was too outdated.
| * | fix comment typos concerning "consistent"Uwe Kleine-König2010-12-101-1/+1
| | | | | | | | | | | | | | | Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | | ext4: dynamically allocate the jbd2_inode in ext4_inode_info as necessaryTheodore Ts'o2011-01-101-7/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the jbd2_inode structure (which is 48 bytes) with a pointer and only allocate the jbd2_inode when it is needed --- that is, when the file system has a journal present and the inode has been opened for writing. This allows us to further slim down the ext4_inode_info structure. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* | | jbd2: simplify return path of journal_init_commonTheodore Ts'o2010-12-181-4/+2
| | | | | | | | | | | | Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* | | jbd2: move debug message into debug #ifdefTheodore Ts'o2010-12-181-1/+1
| | | | | | | | | | | | | | | | | | | | | This is a port to jbd2 of a patch which Namhyung Kim <namhyung@gmail.com> originally made to fs/jbd. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* | | jbd2: remove unnecessary goto statementTheodore Ts'o2010-12-181-2/+0
| | | | | | | | | | | | | | | | | | | | | This is a port to jbd2 of a patch which Namhyung Kim <namhyung@gmail.com> originally made to fs/jbd. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* | | jbd2: use offset_in_page() instead of manual calculationTheodore Ts'o2010-12-181-1/+1
| | | | | | | | | | | | | | | | | | | | | This is a port to jbd2 of a patch which Namhyung Kim <namhyung@gmail.com> originally made to fs/jbd. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* | | jbd2: Fix a debug message in do_get_write_access()Theodore Ts'o2010-12-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | 'buffer_head' should be 'journal_head' This is a port of a patch which Namhyung Kim <namhyung@gmail.com> made to fs/jbd to jbd2. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* | | jbd2: Use pr_notice_ratelimited() in journal_alloc_journal_head()Theodore Ts'o2010-12-171-6/+2
| |/ |/| | | | | | | | | | | | | | | We had an open-coded version of printk_ratelimited(); use the provided abstraction to make the code cleaner and easier to understand. Based on a similar patch for fs/jbd from Namhyung Kim <namhyung@gmail.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* | jbd2: fix /proc/fs/jbd2/<dev> when using an external journalyangsheng2010-11-171-8/+8
| | | | | | | | | | | | | | | | | | In jbd2_journal_init_dev(), we need make sure the journal structure is fully initialzied before calling jbd2_stats_proc_init(). Reviewed-by: Andreas Dilger <andreas.dilger@oracle.com> Signed-off-by: yangsheng <sheng.yang@oracle.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* | jbd2: Convert jbd2_slab_create_sem to mutexThomas Gleixner2010-10-301-4/+4
|/ | | | | | | | | | | | | jbd2_slab_create_sem is used as a mutex, so make it one. [ akpm muttered: We may as well make it local to jbd2_journal_create_slab() also. ] Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ted Ts'o <tytso@mit.edu> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <alpine.LFD.2.00.1010162231480.2496@localhost6.localdomain6> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* Merge branch 'upstream-merge' of ↵Linus Torvalds2010-10-274-5/+22
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'upstream-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (50 commits) ext4,jbd2: convert tracepoints to use major/minor numbers ext4: optimize orphan_list handling for ext4_setattr ext4: fix unbalanced mutex unlock in error path of ext4_li_request_new ext4: fix compile error in ext4_fallocate() ext4: move ext4_mb_{get,put}_buddy_cache_lock and make them static ext4: rename mark_bitmap_end() to ext4_mark_bitmap_end() ext4: move flush_completed_IO to fs/ext4/fsync.c and make it static ext4: rename {ext,idx}_pblock and inline small extent functions ext4: make various ext4 functions be static ext4: rename {exit,init}_ext4_*() to ext4_{exit,init}_*() ext4: fix kernel oops if the journal superblock has a non-zero j_errno ext4: update writeback_index based on last page scanned ext4: implement writeback livelock avoidance using page tagging ext4: tidy up a void argument in inode.c ext4: add batched_discard into ext4 feature list ext4: Add batched discard support for ext4 fs: Add FITRIM ioctl ext4: Use return value from sb_issue_discard() ext4: Check return value of sb_getblk() and friends ext4: use bio layer instead of buffer layer in mpage_da_submit_io ...
| * Merge branch 'next' into upstream-mergeTheodore Ts'o2010-10-274-5/+22
| |\ | | | | | | | | | | | | | | | | | | Conflicts: fs/ext4/inode.c fs/ext4/mballoc.c include/trace/events/ext4.h
| | * jbd2: Add sanity check for attempts to start handle during umountTheodore Ts'o2010-10-272-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | An attempt to modify the file system during the call to jbd2_destroy_journal() can lead to a system lockup. So add some checking to make it much more obvious when this happens to and to determine where the offending code is located. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| | * jbd2: Fix I/O hang in jbd2_journal_release_jbd_inodeBrian King2010-10-272-5/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a hang seen in jbd2_journal_release_jbd_inode on a lot of Power 6 systems running with ext4. When we get in the hung state, all I/O to the disk in question gets blocked where we stay indefinitely. Looking at the task list, I can see we are stuck in jbd2_journal_release_jbd_inode waiting on a wake up. I added some debug code to detect this scenario and dump additional data if we were stuck in jbd2_journal_release_jbd_inode for longer than 30 minutes. When it hit, I was able to see that i_flags was 0, suggesting we missed the wake up. This patch changes i_flags to be an unsigned long, uses bit operators to access it, and adds barriers around the accesses. Prior to applying this patch, we were regularly hitting this hang on numerous systems in our test environment. After applying the patch, the hangs no longer occur. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* | | Merge branch 'for_linus' of ↵Linus Torvalds2010-10-271-1/+1
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6: (24 commits) quota: Fix possible oops in __dquot_initialize() ext3: Update kernel-doc comments jbd/2: fixed typos ext2: fixed typo. ext3: Fix debug messages in ext3_group_extend() jbd: Convert atomic_inc() to get_bh() ext3: Remove misplaced BUFFER_TRACE() in ext3_truncate() jbd: Fix debug message in do_get_write_access() jbd: Check return value of __getblk() ext3: Use DIV_ROUND_UP() on group desc block counting ext3: Return proper error code on ext3_fill_super() ext3: Remove unnecessary casts on bh->b_data ext3: Cleanup ext3_setup_super() quota: Fix issuing of warnings from dquot_transfer quota: fix dquot_disable vs dquot_transfer race v2 jbd: Convert bitops to buffer fns ext3/jbd: Avoid WARN() messages when failing to write the superblock jbd: Use offset_in_page() instead of manual calculation jbd: Remove unnecessary goto statement jbd: Use printk_ratelimited() in journal_alloc_journal_head() ...
| * | jbd/2: fixed typosAndrea Gelmini2010-10-281-1/+1
| |/ | | | | | | | | | | | | "wakup" Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: Jan Kara <jack@suse.cz>
* | Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2010-10-222-56/+21
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block: (46 commits) xen-blkfront: disable barrier/flush write support Added blk-lib.c and blk-barrier.c was renamed to blk-flush.c block: remove BLKDEV_IFL_WAIT aic7xxx_old: removed unused 'req' variable block: remove the BH_Eopnotsupp flag block: remove the BLKDEV_IFL_BARRIER flag block: remove the WRITE_BARRIER flag swap: do not send discards as barriers fat: do not send discards as barriers ext4: do not send discards as barriers jbd2: replace barriers with explicit flush / FUA usage jbd2: Modify ASYNC_COMMIT code to not rely on queue draining on barrier jbd: replace barriers with explicit flush / FUA usage nilfs2: replace barriers with explicit flush / FUA usage reiserfs: replace barriers with explicit flush / FUA usage gfs2: replace barriers with explicit flush / FUA usage btrfs: replace barriers with explicit flush / FUA usage xfs: replace barriers with explicit flush / FUA usage block: pass gfp_mask and flags to sb_issue_discard dm: convey that all flushes are processed as empty ...
| * | block: remove BLKDEV_IFL_WAITChristoph Hellwig2010-09-162-6/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All the blkdev_issue_* helpers can only sanely be used for synchronous caller. To issue cache flushes or barriers asynchronously the caller needs to set up a bio by itself with a completion callback to move the asynchronous state machine ahead. So drop the BLKDEV_IFL_WAIT flag that is always specified when calling blkdev_issue_* and also remove the now unused flags argument to blkdev_issue_flush and blkdev_issue_zeroout. For blkdev_issue_discard we need to keep it for the secure discard flag, which gains a more descriptive name and loses the bitops vs flag confusion. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * | jbd2: replace barriers with explicit flush / FUA usageChristoph Hellwig2010-09-101-39/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Switch to the WRITE_FLUSH_FUA flag for journal commits and remove the EOPNOTSUPP detection for barriers. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * | jbd2: Modify ASYNC_COMMIT code to not rely on queue draining on barrierJan Kara2010-09-101-13/+16
| |/ | | | | | | | | | | | | | | | | | | Currently JBD2 relies blkdev_issue_flush() draining the queue when ASYNC_COMMIT feature is set. This property is going away so make JBD2 wait for buffers it needs on its own before submitting the cache flush. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* | Merge branch 'for-2.6.37/core' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2010-10-221-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-2.6.37/core' of git://git.kernel.dk/linux-2.6-block: (39 commits) cfq-iosched: Fix a gcc 4.5 warning and put some comments block: Turn bvec_k{un,}map_irq() into static inline functions block: fix accounting bug on cross partition merges block: Make the integrity mapped property a bio flag block: Fix double free in blk_integrity_unregister block: Ensure physical block size is unsigned int blkio-throttle: Fix possible multiplication overflow in iops calculations blkio-throttle: limit max iops value to UINT_MAX blkio-throttle: There is no need to convert jiffies to milli seconds blkio-throttle: Fix link failure failure on i386 blkio: Recalculate the throttled bio dispatch time upon throttle limit change blkio: Add root group to td->tg_list blkio: deletion of a cgroup was causes oops blkio: Do not export throttle files if CONFIG_BLK_DEV_THROTTLING=n block: set the bounce_pfn to the actual DMA limit rather than to max memory block: revert bad fix for memory hotplug causing bounces Fix compile error in blk-exec.c for !CONFIG_DETECT_HUNG_TASK block: set the bounce_pfn to the actual DMA limit rather than to max memory block: Prevent hang_check firing during long I/O cfq: improve fsync performance for small files ... Fix up trivial conflicts due to __rcu sparse annotation in include/linux/genhd.h
| * | cfq: improve fsync performance for small filesCorrado Zoccolo2010-09-201-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fsync performance for small files achieved by cfq on high-end disks is lower than what deadline can achieve, due to idling introduced between the sync write happening in process context and the journal commit. Moreover, when competing with a sequential reader, a process writing small files and fsync-ing them is starved. This patch fixes the two problems by: - marking journal commits as WRITE_SYNC, so that they get the REQ_NOIDLE flag set, - force all queues that have REQ_NOIDLE requests to be put in the noidle tree. Having the queue associated to the fsync-ing process and the one associated to journal commits in the noidle tree allows: - switching between them without idling, - fairness vs. competing idling queues, since they will be serviced only after the noidle tree expires its slice. Acked-by: Vivek Goyal <vgoyal@redhat.com> Reviewed-by: Jeff Moyer <jmoyer@redhat.com> Tested-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Corrado Zoccolo <czoccolo@gmail.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* | JBD2: Allow feature checks before journal recoveryPatrick J. LoPresti2010-09-101-0/+4
|/ | | | | | | | | | | | | | | | | | | Before we start accessing a huge (> 16 TiB) OCFS2 volume, we need to confirm that its journal supports 64-bit offsets. In particular, we need to check the journal's feature bits before recovering the journal. This is not possible with JBD2 at present, because the journal superblock (where the feature bits reside) is not loaded from disk until the journal is recovered. This patch loads the journal superblock in jbd2_journal_check_used_features() if it has not already been loaded, allowing us to check the feature bits before journal recovery. Signed-off-by: Patrick LoPresti <lopresti@gmail.com> Cc: linux-ext4@vger.kernel.org Acked-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* remove SWRITE* I/O typesChristoph Hellwig2010-08-183-3/+5
| | | | | | | | | | | | | | | | | These flags aren't real I/O types, but tell ll_rw_block to always lock the buffer instead of giving up on a failed trylock. Instead add a new write_dirty_buffer helper that implements this semantic and use it from the existing SWRITE* callers. Note that the ll_rw_block code had a bug where it didn't promote WRITE_SYNC_PLUG properly, which this patch fixes. In the ufs code clean up the helper that used to call ll_rw_block to mirror sync_dirty_buffer, which is the function it implements for compound buffers. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* kill BH_Ordered flagChristoph Hellwig2010-08-181-24/+15
| | | | | | | | | Instead of abusing a buffer_head flag just add a variant of sync_dirty_buffer which allows passing the exact type of write flag required. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* ext4: clean up compiler warning in start_this_handle()Theodore Ts'o2010-08-091-19/+27
| | | | | | | | | | Fix the compiler warning: fs/jbd2/transaction.c: In function ‘start_this_handle’: fs/jbd2/transaction.c:98: warning: unused variable ‘ts’ Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
* Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4Linus Torvalds2010-08-075-196/+236
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (40 commits) ext4: Adding error check after calling ext4_mb_regular_allocator() ext4: Fix dirtying of journalled buffers in data=journal mode ext4: re-inline ext4_rec_len_(to|from)_disk functions jbd2: Remove t_handle_lock from start_this_handle() jbd2: Change j_state_lock to be a rwlock_t jbd2: Use atomic variables to avoid taking t_handle_lock in jbd2_journal_stop ext4: Add mount options in superblock ext4: force block allocation on quota_off ext4: fix freeze deadlock under IO ext4: drop inode from orphan list if ext4_delete_inode() fails ext4: check to make make sure bd_dev is set before dereferencing it jbd2: Make barrier messages less scary ext4: don't print scary messages for allocation failures post-abort ext4: fix EFBIG edge case when writing to large non-extent file ext4: fix ext4_get_blocks references ext4: Always journal quota file modifications ext4: Fix potential memory leak in ext4_fill_super ext4: Don't error out the fs if the user tries to make a file too big ext4: allocate stripe-multiple IOs on stripe boundaries ext4: move aio completion after unwritten extent conversion ... Fix up conflicts in fs/ext4/inode.c as per Ted. Fix up xfs conflicts as per earlier xfs merge.
| * jbd2: Remove t_handle_lock from start_this_handle()Theodore Ts'o2010-08-032-12/+24
| | | | | | | | | | | | | | | | This should remove the last exclusive lock from start_this_handle(), so that we should now be able to start multiple transactions at the same time on large SMP systems. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| * jbd2: Change j_state_lock to be a rwlock_tTheodore Ts'o2010-08-034-103/+107
| | | | | | | | | | | | | | | | Lockstat reports have shown that j_state_lock is a major source of lock contention, especially on systems with more than 4 CPU cores. So change it to be a read/write spinlock. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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