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Add the missing unlock before return from function ti_qspi_start_transfer_one()
in the error handling case.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mark Brown <broonie@linaro.org>
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spi: quad: fix the name of DT property in patch
The previous property name spi-tx-nbits and spi-rx-nbits looks not
human-readable. To make it consistent with other devices, using property
name spi-tx-bus-width and spi-rx-bus-width instead of the previous one
specify the number of data wires that spi controller will work in.
Add the specification in spi-bus.txt.
Signed-off-by: wangyuhang <wangyuhang2014@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
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da9063_ldo_lim_event() is only referenced in this driver, make it static.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
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When the binary search returns 0 (exact match), the target key
will necessarily be at slot 0 of all nodes below the current one,
so in this case the binary search is not needed because it will
always return 0, and we waste time doing it, holding node locks
for longer than necessary, etc.
Below follow histograms with the times spent on the current approach of
doing a binary search when the previous binary search returned 0, and
times for the new approach, which directly picks the first item/child
node in the leaf/node.
Current approach:
Count: 6682
Range: 35.000 - 8370.000; Mean: 85.837; Median: 75.000; Stddev: 106.429
Percentiles: 90th: 124.000; 95th: 145.000; 99th: 206.000
35.000 - 61.080: 1235 ################
61.080 - 106.053: 4207 #####################################################
106.053 - 183.606: 1122 ##############
183.606 - 317.341: 111 #
317.341 - 547.959: 6 |
547.959 - 8370.000: 1 |
Approach proposed by this patch:
Count: 6682
Range: 6.000 - 135.000; Mean: 16.690; Median: 16.000; Stddev: 7.160
Percentiles: 90th: 23.000; 95th: 27.000; 99th: 40.000
6.000 - 8.418: 58 #
8.418 - 11.670: 1149 #########################
11.670 - 16.046: 2418 #####################################################
16.046 - 21.934: 2098 ##############################################
21.934 - 29.854: 744 ################
29.854 - 40.511: 154 ###
40.511 - 54.848: 41 #
54.848 - 74.136: 5 |
74.136 - 100.087: 9 |
100.087 - 135.000: 6 |
These samples were captured during a run of the btrfs tests 001, 002 and
004 in the xfstests, with a leaf/node size of 4Kb.
Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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We only need an async starter if we can't make a GFP_NOFS allocation in our
current path. This is the case for the endio stuff since it happens in IRQ
context, but things like the caching thread workers and the delalloc flushers we
can easily make this allocation and start threads right away. Also change the
worker count for the caching thread pool. Traditionally we limited this to 2
since we took read locks while caching, but nowadays we do this lockless so
there's no reason to limit the number of caching threads. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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This fixes a problem where if we fail a truncate we will leave the i_size set
where we wanted to truncate to instead of where we were able to truncate to.
Fix this by making btrfs_truncate_inode_items do the disk_i_size update as it
removes extents, that way it will always be consistent with where its extents
are. Then if the truncate fails at all we can update the in-ram i_size with
what we have on disk and delete the orphan item. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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If there's an ongoing transaction when the uuid scan kthread attempts
to create one, the kthread will block, waiting for that transaction to
finish while it's keeping locks on the tree root, and in turn the existing
transaction is waiting for those locks to be free.
The stack trace reported by the kernel follows.
[36700.671601] INFO: task btrfs-uuid:15480 blocked for more than 120 seconds.
[36700.671602] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[36700.671602] btrfs-uuid D 0000000000000000 0 15480 2 0x00000000
[36700.671604] ffff880710bd5b88 0000000000000046 ffff8803d36ba850 0000000000030000
[36700.671605] ffff8806d76dc530 ffff880710bd5fd8 ffff880710bd5fd8 ffff880710bd5fd8
[36700.671607] ffff8808098ac530 ffff8806d76dc530 ffff880710bd5b98 ffff8805e4508e40
[36700.671608] Call Trace:
[36700.671610] [<ffffffff816f36b9>] schedule+0x29/0x70
[36700.671620] [<ffffffffa05a3bdf>] wait_current_trans.isra.33+0xbf/0x120 [btrfs]
[36700.671623] [<ffffffff81066760>] ? add_wait_queue+0x60/0x60
[36700.671629] [<ffffffffa05a5b06>] start_transaction+0x3d6/0x530 [btrfs]
[36700.671636] [<ffffffffa05bb1f4>] ? btrfs_get_token_32+0x64/0xf0 [btrfs]
[36700.671642] [<ffffffffa05a5fbb>] btrfs_start_transaction+0x1b/0x20 [btrfs]
[36700.671649] [<ffffffffa05c8a81>] btrfs_uuid_scan_kthread+0x211/0x3d0 [btrfs]
[36700.671655] [<ffffffffa05c8870>] ? __btrfs_open_devices+0x2a0/0x2a0 [btrfs]
[36700.671657] [<ffffffff81065fa0>] kthread+0xc0/0xd0
[36700.671659] [<ffffffff81065ee0>] ? flush_kthread_worker+0xb0/0xb0
[36700.671661] [<ffffffff816fcd1c>] ret_from_fork+0x7c/0xb0
[36700.671662] [<ffffffff81065ee0>] ? flush_kthread_worker+0xb0/0xb0
[36700.671663] INFO: task btrfs:15481 blocked for more than 120 seconds.
[36700.671664] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[36700.671665] btrfs D 0000000000000000 0 15481 15212 0x00000004
[36700.671666] ffff880248cbf4c8 0000000000000086 ffff8803d36ba700 ffff8801dbd5c280
[36700.671668] ffff880807815c40 ffff880248cbffd8 ffff880248cbffd8 ffff880248cbffd8
[36700.671669] ffff8805e86a0000 ffff880807815c40 ffff880248cbf4d8 ffff8801dbd5c280
[36700.671670] Call Trace:
[36700.671672] [<ffffffff816f36b9>] schedule+0x29/0x70
[36700.671679] [<ffffffffa05d9b0d>] btrfs_tree_lock+0x6d/0x230 [btrfs]
[36700.671680] [<ffffffff81066760>] ? add_wait_queue+0x60/0x60
[36700.671685] [<ffffffffa0582829>] btrfs_search_slot+0x999/0xb00 [btrfs]
[36700.671691] [<ffffffffa05bd9de>] ? btrfs_lookup_first_ordered_extent+0x5e/0xb0 [btrfs]
[36700.671698] [<ffffffffa05e3e54>] __btrfs_write_out_cache+0x8c4/0xa80 [btrfs]
[36700.671704] [<ffffffffa05e4362>] btrfs_write_out_cache+0xb2/0xf0 [btrfs]
[36700.671710] [<ffffffffa05c4441>] ? free_extent_buffer+0x61/0xc0 [btrfs]
[36700.671716] [<ffffffffa0594c82>] btrfs_write_dirty_block_groups+0x562/0x650 [btrfs]
[36700.671723] [<ffffffffa0610092>] commit_cowonly_roots+0x171/0x24b [btrfs]
[36700.671729] [<ffffffffa05a4dde>] btrfs_commit_transaction+0x4fe/0xa10 [btrfs]
[36700.671735] [<ffffffffa0610af3>] create_subvol+0x5c0/0x636 [btrfs]
[36700.671742] [<ffffffffa05d49ff>] btrfs_mksubvol.isra.60+0x33f/0x3f0 [btrfs]
[36700.671747] [<ffffffffa05d4bf2>] btrfs_ioctl_snap_create_transid+0x142/0x190 [btrfs]
[36700.671752] [<ffffffffa05d4c6c>] ? btrfs_ioctl_snap_create+0x2c/0x80 [btrfs]
[36700.671757] [<ffffffffa05d4c9e>] btrfs_ioctl_snap_create+0x5e/0x80 [btrfs]
[36700.671759] [<ffffffff8113a764>] ? handle_pte_fault+0x84/0x920
[36700.671764] [<ffffffffa05d87eb>] btrfs_ioctl+0xf0b/0x1d00 [btrfs]
[36700.671766] [<ffffffff8113c120>] ? handle_mm_fault+0x210/0x310
[36700.671768] [<ffffffff816f83a4>] ? __do_page_fault+0x284/0x4e0
[36700.671770] [<ffffffff81180aa6>] do_vfs_ioctl+0x96/0x550
[36700.671772] [<ffffffff81170fe3>] ? __sb_end_write+0x33/0x70
[36700.671774] [<ffffffff81180ff1>] SyS_ioctl+0x91/0xb0
[36700.671775] [<ffffffff816fcdc2>] system_call_fastpath+0x16/0x1b
Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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AFAICT chunk 0 is no longer special, and so it should be restriped just
like every other chunk. One reason for this change is us refusing the
relocation can lead to filesystems that can only be mounted ro, and
never rw -- see the bugzilla [1] for details. The other reason is that
device removal code is already doing this: it will happily relocate
chunk 0 is part of shrinking the device.
[1] https://bugzilla.kernel.org/show_bug.cgi?id=60594
Reported-by: Xavier Bassery <xavier@bartica.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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To get name of the file from a pathname let's use kbasename() helper. It allows
to simplify code a bit.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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now threads can return BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS
as defined in btrfs.h for the dev excl operation error in
the FS, which means with this kernel would stop logging
(almost an user error) into the /var/log/messages
v2: accepts Josef' comment
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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We currently have this problem where you can truncate pages that have not yet
been written for an ordered extent. We do this because the truncate will be
coming behind to clean us up anyway so what's the harm right? Well if truncate
fails for whatever reason we leave an orphan item around for the file to be
cleaned up later. But if the user goes and truncates up the file and tries to
read from the area that had been discarded previously they will get a csum error
because we never actually wrote that data out.
This patch fixes this by allowing us to either discard the ordered extent
completely, by which I mean we just free up the space we had allocated and not
add the file extent, or adjust the length of the file extent we write. We do
this by setting the length we truncated down to in the ordered extent, and then
we set the file extent length and ram bytes to this length. The total disk
space stays unchanged since we may be compressed and we can't just chop off the
disk space, but at least this way the file extent only points to the valid data.
Then when the file extent is free'd the extent and csums will be freed normally.
This patch is needed for the next series which will give us more graceful
recovery of failed truncates. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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All of these are logic checks to make sure we're not breaking anything, so
convert them over to ASSERT(). Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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One of the complaints we get a lot is how many BUG_ON()'s we have. So to help
with this I'm introducing a kconfig option to enable/disable a new ASSERT()
mechanism much like what XFS does. This will allow us developers to still get
our nice panics but allow users/distros to compile them out. With this we can
go through and convert any BUG_ON()'s that we have to catch actual programming
mistakes to the new ASSERT() and then fix everybody else to return errors. This
will also allow developers to leave sanity checks in their new code to make sure
we don't trip over problems while testing stuff and vetting new features.
Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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I noticed that if I tried to mount a file system with -o degraded after having
done it once already we would fail to mount. This is because the
fs_devices->missing count was getting bumped everytime we mounted, but not
getting reset whenever we unmounted. To fix this we just drop the missing count
as we're closing devices to make sure this doesn't happen. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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btrfs_read_fs_root_no_name() already checks if btrfs_root_refs()
is zero and returns ENOENT in this case. There is no need to do
it again in three more places.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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