Re: Root volume (ID 5) in deleting state

On 02/13/2017 12:26 PM, Martin Mlynář wrote: > > I've currently run into strange problem with BTRFS. I'm using it as my > daily driver as root FS. Nothing complicated, just few subvolumes and > incremental backups using btrbk. > > Now I've noticed that my btrfs root volume (absolute top, ID 5)

Re: Root volume (ID 5) in deleting state

On 13.2.2017 21:03, Hans van Kranenburg wrote: On 02/13/2017 12:26 PM, Martin Mlynář wrote: I've currently run into strange problem with BTRFS. I'm using it as my daily driver as root FS. Nothing complicated, just few subvolumes and incremental backups using btrbk. Now I've noticed that my

Re: Root volume (ID 5) in deleting state

Hi, On 02/13/2017 09:50 PM, Martin Mlynář wrote: > On 13.2.2017 21:03, Hans van Kranenburg wrote: >> On 02/13/2017 12:26 PM, Martin Mlynář wrote: >>> I've currently run into strange problem with BTRFS. I'm using it as my >>> daily driver as root FS. Nothing complicated, just few subvolumes and

[PATCH] Btrfs: fix if style in find_free_extent

This puts '&&' on the first line of if statement. Signed-off-by: Liu Bo --- fs/btrfs/extent-tree.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 6832047..4cf332c 100644 ---

Re: [PATCH 01/29] btrfs: remove unused parameter from read_block_for_search

On Mon, Feb 13, 2017 at 10:33:24AM +0100, David Sterba wrote: > Never used in that function. There is already one, https://patchwork.kernel.org/patch/9546079/ Thanks, -liubo > > Signed-off-by: David Sterba > --- > fs/btrfs/ctree.c | 10 +- > 1 file changed, 5

[PATCH 7/7] nonblocking aio: btrfs

From: Goldwyn Rodrigues Return EAGAIN if any of the following checks fail + i_rwsem is lockable + NODATACOW or PREALLOC is set + Can nocow at the desired location + Writing beyond end of file Signed-off-by: Goldwyn Rodrigues --- fs/btrfs/file.c | 25

Re: [PATCH 05/29] btrfs: remove unused parameter from write_dev_supers

On Mon, Feb 13, 2017 at 10:33:36AM +0100, David Sterba wrote: > The barriers are handled by the caller. > Reviewed-by: Liu Bo Thanks, -liubo > Signed-off-by: David Sterba > --- > fs/btrfs/disk-io.c | 6 +++--- > 1 file changed, 3 insertions(+), 3

Re: [PATCH 11/29] btrfs: remove unused parameter from btrfs_check_super_valid

On Mon, Feb 13, 2017 at 10:33:55AM +0100, David Sterba wrote: > None of the checks need to know the RO/RW status. > OK...there was a readonly check, which lets us skip all checks, it was removed by the below commit, should we add the check back? commit 1104a8855109a4051d74977f819a13b4516aa11e

Re: FS gives kernel UPS on attempt to create snapshot and after running balance it's unmountable.

Forgot to mention: btrfs inspect-internal dump-super -af /dev/sdc btrfs inspect-internal: unknown token 'dump-super' usage: btrfs inspect-internal btrfs inspect-internal inode-resolve [-v] Get file system paths for the given inode btrfs inspect-internal logical-resolve [-Pv]

[PATCH v2] btrfs: relocation: Enhance kernel error output for relocation

When balance(relocation) fails, btrfs-progs will report like: ERROR: error during balancing '/mnt/scratch': Input/output error There may be more info in syslog - try dmesg | tail However kernel can't provide may useful info in many cases to locate the problem. This patch will add error messages

Re: [PATCH 01/29] btrfs: remove unused parameter from read_block_for_search

At 02/14/2017 08:59 AM, Liu Bo wrote: On Mon, Feb 13, 2017 at 10:33:24AM +0100, David Sterba wrote: Never used in that function. There is already one, https://patchwork.kernel.org/patch/9546079/ Hi Liu, That patch seems to remove @trans, while this is to remove @time_seq. Or did I missed

[PATCH] Btrfs: specify a new ordered extent type for create_io_em

As 0 refers to an existing type BTRFS_ORDERED_IO_DONE, this specifies a new type 'REGULAR' for regular IO. Signed-off-by: Liu Bo --- This fixes the problem in the patch "[PATCH] Btrfs: create a helper to create em for IO". fs/btrfs/inode.c| 8

Re: [PATCH] btrfs: relocation: Enhance kernel error output for relocation

On Mon, Feb 13, 2017 at 03:26:27PM +0800, Qu Wenruo wrote: > When balance(relocation) fails, btrfs-progs will report like: > > ERROR: error during balancing '/mnt/scratch': Input/output error > There may be more info in syslog - try dmesg | tail > > However in some case, for example debugging

Re: Is it possible to have metadata-only device with no data?

Yeah, thank you for suggestion. Bcache is what I actually use right now. However it's concept is different, operating at block/bucket level and requires another (underlying!) layer. 06.02.2017, 01:27, "Kai Krakow" : > Am Mon, 06 Feb 2017 00:42:01 +0300 > schrieb Alexander

[PATCH] Btrfs: use helper to get used bytes of space_info

This uses a helper instead of open code around used byte of space_info everywhere. Signed-off-by: Liu Bo --- fs/btrfs/extent-tree.c | 42 -- 1 file changed, 20 insertions(+), 22 deletions(-) diff --git a/fs/btrfs/extent-tree.c

[PATCH] Btrfs: try to avoid acquiring free space ctl's lock

We don't need to take the lock if the block group has not been cached. Signed-off-by: Liu Bo --- fs/btrfs/extent-tree.c | 23 --- 1 file changed, 12 insertions(+), 11 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index

Re: FS gives kernel UPS on attempt to create snapshot and after running balance it's unmountable.

At 02/14/2017 08:23 AM, Tomasz Kusmierz wrote: Forgot to mention: btrfs inspect-internal dump-super -af /dev/sdc Your btrfs-progs is somewhat old, which doesn't integrate dump super into inspect-internal. In that case, you can use btrfs-show-super -af instead. Thanks, Qu btrfs

Re: [PATCH 01/29] btrfs: remove unused parameter from read_block_for_search

On Tue, Feb 14, 2017 at 09:03:49AM +0800, Qu Wenruo wrote: > > > At 02/14/2017 08:59 AM, Liu Bo wrote: > > On Mon, Feb 13, 2017 at 10:33:24AM +0100, David Sterba wrote: > > > Never used in that function. > > > > There is already one, > > https://patchwork.kernel.org/patch/9546079/ > > Hi Liu,

Re: Is it possible to have metadata-only device with no data?

Thank you. Interesting. At least it's possible to implement in theory. Though, this way metadata-only device is still handled like a casual btrfs device and not distinguished separately from normal data+metadata devices. 06.02.2017, 02:54, "Roman Mamedov" : > On Sun, 5 Feb 2017

[PATCH 0/7] Qgroup cleanups

I've spotted some cleanup-ready code while going through the file, so here it is. There are no changes to the core qgoups code, just the support and framework code. For 4.11. David Sterba (7): btrfs: qgroups: make __del_qgroup_relation static btrfs: ulist: make the finalization

[PATCH 2/7] btrfs: ulist: make the finalization function public

Make ulist_fini externally visible so the ulist API is complete. Signed-off-by: David Sterba --- fs/btrfs/ulist.c | 2 +- fs/btrfs/ulist.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/ulist.c b/fs/btrfs/ulist.c index b1434bb57e36..5deee56434fc

[PATCH 3/7] btrfs: embed extent_changeset::range_changed to the structure

We can embed range_changed to the extent changeset to address following problems: - no need to allocate ulist dynamically, we also get rid of the GFP_NOFS for free - fix lack of allocation failure checking in btrfs_qgroup_reserve_data The stack consuption where extent_changeset is used

[PATCH 4/7] btrfs: check quota status earlier and don't do unnecessary frees

Status of quotas should be the first check in btrfs_qgroup_account_extent and we can return immediatelly, no need to do no-op ulist frees. Signed-off-by: David Sterba --- fs/btrfs/qgroup.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git

[PATCH 7/7] btrfs: remove pointless rcu protection from btrfs_qgroup_inherit

There was never need for RCU protection around reading nodesize or other fairly constant filesystem data. Signed-off-by: David Sterba --- fs/btrfs/qgroup.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index

[PATCH 6/7] btrfs: qgroups: opencode qgroup_free helper

The helper name is not too helpful and is just wrapping a simple call. Signed-off-by: David Sterba --- fs/btrfs/qgroup.c | 18 +- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index

[PATCH 5/7] btrfs: remove unnecessary mutex lock in qgroup_account_snapshot

The quota status used to be tracked as a variable, so the mutex was needed (until "Btrfs: add a flags field to btrfs_fs_info" afcdd129e05a9). Since the status is a bit modified atomically and we don't hold the mutex beyond the check, we can drop it. Signed-off-by: David Sterba

Re: FS gives kernel UPS on attempt to create snapshot and after running balance it's unmountable.

Problem is to send a larger log into this mailing list :/ Anyway: uname -a Linux tevva-server 4.8.7-1.el7.elrepo.x86_64 #1 SMP Thu Nov 10 20:47:24 EST 2016 x86_64 x86_64 x86_64 GNU/Linux cut from messages (bear in mind that this is a single cut with a bit cut from inside of it to fit it in the

[PATCH 1/7] btrfs: qgroups: make __del_qgroup_relation static

Internal helper. Signed-off-by: David Sterba --- fs/btrfs/qgroup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index 8496dbf3f38b..971701328229 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -1223,7

[PATCH 16/29] btrfs: remove unused parameter from add_pending_csums

Never used. Signed-off-by: David Sterba --- fs/btrfs/inode.c | 6 ++ 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 7ed693294498..3ac7474f921d 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1961,8 +1961,7

[PATCH 21/29] btrfs: remove unused parameter from create_snapshot

The name parameters have never been used, as the name is passed via the dentry. Signed-off-by: David Sterba --- fs/btrfs/ioctl.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index e8c7c313c113..91188a2ac5a1 100644

[PATCH 18/29] btrfs: remove unused parameter from btrfs_fill_super

Never used for anything meaningful since we have our own superblock filler. Signed-off-by: David Sterba --- fs/btrfs/super.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 93ed29c2a38b..da687dc79cce 100644 ---

[PATCH 24/29] btrfs: remove unused parameters from btrfs_cmp_data

After the page locking has been reworked, we get all pages prepared via cmp_pages. Signed-off-by: David Sterba --- fs/btrfs/ioctl.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 91188a2ac5a1..1f13f8416d29

[PATCH 13/29] btrfs: remove unused parameter from tree_move_next_or_upnext

Not needed. Signed-off-by: David Sterba --- fs/btrfs/ctree.c | 6 ++ 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index a981c2acd6fa..1192bc7d2ee7 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -5256,8 +5256,7

[PATCH 23/29] btrfs: remove unused parameter from __add_inline_refs

Never used. Signed-off-by: David Sterba --- fs/btrfs/backref.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index db706595e631..7699e16784d3 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -956,8

[PATCH 14/29] btrfs: remove unused parameter from submit_extent_page

This used to hold number of maximum pages to allocate, but this is now limited by BIO_MAX_PAGES. Signed-off-by: David Sterba --- fs/btrfs/extent_io.c | 7 +++ 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index

[PATCH 07/29] btrfs: remove unused parameter from __push_leaf_right

Unused since long ago. Signed-off-by: David Sterba --- fs/btrfs/ctree.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 4c5d7c40c8bf..2283f92b5484 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -3595,8

[PATCH 22/29] btrfs: remove unused parameters from scrub_setup_wr_ctx

Never used. Signed-off-by: David Sterba --- fs/btrfs/scrub.c | 10 +++--- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 9a94670536a6..f7dffacf61fa 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -282,9

[PATCH 25/29] btrfs: remove unused parameter from clone_copy_inline_extent

Never used. Signed-off-by: David Sterba --- fs/btrfs/ioctl.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 1f13f8416d29..b9e6f8a4f760 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -3383,8 +3383,7 @@

[PATCH 27/29] btrfs: remove unused parameter from cleanup_write_cache_enospc

bitmap_list is unused since the io_ctl framework. Signed-off-by: David Sterba --- fs/btrfs/free-space-cache.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index 437580e84d9d..0d02599d22bc

[PATCH 10/29] btrfs: remove unused parameter from btrfs_prepare_extent_commit

Added but never used. Signed-off-by: David Sterba --- fs/btrfs/ctree.h | 3 +-- fs/btrfs/extent-tree.c | 3 +-- fs/btrfs/transaction.c | 2 +- 3 files changed, 3 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index

[PATCH 12/29] btrfs: remove unused parameter from tree_move_down

Never needed. Signed-off-by: David Sterba --- fs/btrfs/ctree.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index b98e90a3eee7..a981c2acd6fa 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -5241,7 +5241,7

[PATCH 28/29] btrfs: remove unused parameters from __btrfs_write_out_cache

Both unused after the call to update_cache_item has been moved to __btrfs_wait_cache_io. Signed-off-by: David Sterba --- fs/btrfs/free-space-cache.c | 11 +++ 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/fs/btrfs/free-space-cache.c

[PATCH 11/29] btrfs: remove unused parameter from btrfs_check_super_valid

None of the checks need to know the RO/RW status. Signed-off-by: David Sterba --- fs/btrfs/disk-io.c | 8 +++- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 441a62cd0351..2b06f557c176 100644 ---

[PATCH 29/29] btrfs: remove unused parameter from adjust_slots_upwards

Never used. Signed-off-by: David Sterba --- fs/btrfs/qgroup.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index 6d106e623604..4ef513a392a7 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -1589,8

[PATCH 26/29] btrfs: remove unused parameter from __add_inode_ref

Unused since the helper has been split, eb used in the caller. Signed-off-by: David Sterba --- fs/btrfs/tree-log.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index 62dd138018b5..3806853cde08 100644 ---

[PATCH 01/29] btrfs: remove unused parameter from read_block_for_search

Never used in that function. Signed-off-by: David Sterba --- fs/btrfs/ctree.c | 10 +- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index fbeff20eb194..35e22349c139 100644 --- a/fs/btrfs/ctree.c +++

[PATCH 02/29] btrfs: remove unused parameter from check_async_write

Added but never used. Signed-off-by: David Sterba --- fs/btrfs/disk-io.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 18004169552c..89cd597883fd 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@

[PATCH 05/29] btrfs: remove unused parameter from write_dev_supers

The barriers are handled by the caller. Signed-off-by: David Sterba --- fs/btrfs/disk-io.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 48846d215e97..43e71457c193 100644 --- a/fs/btrfs/disk-io.c +++

[PATCH 20/29] btrfs: remove unused parameter from init_first_rw_device

The 'device' used to be added in that function, but now it's done by the caller. Signed-off-by: David Sterba --- fs/btrfs/volumes.c | 8 +++- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index

[PATCH 09/29] btrfs: remove unused parameter from btrfs_subvolume_release_metadata

Unused since qgroup refactoring that split data and metadata accounting, the btrfs_qgroup_free helper. Signed-off-by: David Sterba --- fs/btrfs/ctree.h | 3 +-- fs/btrfs/extent-tree.c | 3 +-- fs/btrfs/ioctl.c | 11 --- 3 files changed, 6 insertions(+),

[PATCH 06/29] btrfs: merge two superblock writing helpers

write_all_supers and write_ctree_super are almost equal, the parameter 'trans' is unused so we can drop it and have just one helper. Signed-off-by: David Sterba --- fs/btrfs/disk-io.c | 8 +--- fs/btrfs/disk-io.h | 3 +-- fs/btrfs/transaction.c | 2 +-

[PATCH 03/29] btrfs: remove unused parameter from clean_tree_block

Added but never needed. Signed-off-by: David Sterba --- fs/btrfs/ctree.c | 16 fs/btrfs/disk-io.c | 3 +-- fs/btrfs/disk-io.h | 3 +-- fs/btrfs/extent-tree.c | 4 ++-- fs/btrfs/free-space-tree.c | 2 +- fs/btrfs/qgroup.c

[PATCH 15/29] btrfs: remove unused parameter from update_nr_written

The logic has been updated in "Btrfs: make mapping->writeback_index point to the last written page" (a91326679f2a0a4c2) and page is not needed anymore. Signed-off-by: David Sterba --- fs/btrfs/extent_io.c | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff

[PATCH 17/29] btrfs: remove unused parameter from extent_write_cache_pages

The 'tree' was used to call locking hook that does not exist anymore. Signed-off-by: David Sterba --- fs/btrfs/extent_io.c | 6 ++ 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index f683fa5a4b91..22a2f2fa62c7

[PATCH 04/29] btrfs: remove unused parameter from split_item

Never used. Signed-off-by: David Sterba --- fs/btrfs/ctree.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index d509dafdb20c..4c5d7c40c8bf 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -4413,8 +4413,7 @@

[PATCH 08/29] btrfs: remove unused parameter from __push_leaf_left

Unused since long ago. Signed-off-by: David Sterba --- fs/btrfs/ctree.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 2283f92b5484..b98e90a3eee7 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -3825,8

[PATCH 00/29] Cleanup of unused parameters

There are quite a few places where function parameters are unused and there's no reason to keep them. The notable exceptions are callbacks that must match a given prototype. There are several cases where the parameter has not been removed after refactoring or other changes, but I'm more

Re: BTRFS for OLTP Databases

W dniu 2017-02-13 o 13:44 PM, Austin S. Hemmelgarn pisze: > On 2017-02-09 22:58, Andrei Borzenkov wrote: >> 07.02.2017 23:47, Austin S. Hemmelgarn пишет: >> ... >>> Sadly, freezefs (the generic interface based off of xfs_freeze) only >>> works for block device snapshots. Filesystem level

[PATCH] btrfs: make space cache inode readahead failure nonfatal

We do a readahead of the free space cache inode to speed things up but the failure is not fatal, like in other readahead cases. Proper reads would need to happen anyway and any errors would be caught there. Signed-off-by: David Sterba --- fs/btrfs/free-space-cache.c | 10

Root volume (ID 5) in deleting state

Hello, I've currently run into strange problem with BTRFS. I'm using it as my daily driver as root FS. Nothing complicated, just few subvolumes and incremental backups using btrbk. Now I've noticed that my btrfs root volume (absolute top, ID 5) is in "deleting" state. As I've done some

Re: stat(2) returning device ID not existing in mountinfo

Hi, I want to highlight this bug another time. I encountered this bug, when I was looking to a problem with find. I my machine find took an huge quantity of memory (up to 3GB) when used by updatedb. http://lists.gnu.org/archive/html/findutils-patches/2016-12/msg0.html The root of

Re: BTRFS for OLTP Databases

On 2017-02-09 22:58, Andrei Borzenkov wrote: 07.02.2017 23:47, Austin S. Hemmelgarn пишет: ... Sadly, freezefs (the generic interface based off of xfs_freeze) only works for block device snapshots. Filesystem level snapshots need the application software to sync all it's data and then stop

Re: Help understanding autodefrag details

On 2017-02-10 09:21, Peter Zaitsev wrote: Hi, As I have been reading btrfs whitepaper it speaks about autodefrag in very generic terms - once random write in the file is detected it is put in the queue to be defragmented. Yet I could not find any specifics about this process described

[PATCH 2/4] btrfs: use GFP_KERNEL in btrfs_read_qgroup_config

The qgroup config is read during mount, we do not have to use NOFS. Signed-off-by: David Sterba --- fs/btrfs/qgroup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index 8496dbf3f38b..cdd0a16bf469 100644 ---

[PATCH 1/4] btrfs: use GFP_KERNEL in create_snapshot

We don't need to use GFP_NOFS here as this is called from ioctls an the only lock held is the subvol_sem, which is of a high level and protects creation/renames/deletion and is never held in the writeout paths. Signed-off-by: David Sterba --- fs/btrfs/ioctl.c | 4 ++-- 1 file

[PATCH 0/4] More GFP_NOFS removals

A few more conversions to less strict allocation flags, calls originating from an ioctl and with no chance of getting back with a lock already held. For 4.11. The following changes since commit 2e94257a41fece589dc4bd737c70dc770e9040ef: btrfs: Better csum error message for data csum mismatch

[PATCH 4/4] btrfs: use GFP_KERNEL in btrfs_add/del_qgroup_relation

Qgroup relations are added/deleted from ioctl, we hold the high level qgroup lock, no deadlocks or recursion from the allocation possible here. Signed-off-by: David Sterba --- fs/btrfs/qgroup.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git

[PATCH 3/4] btrfs: use GFP_KERNEL in btrfs_quota_enable

We don't need to use GFP_NOFS here as this is called from ioctls an the only lock held is the subvol_sem, which is of a high level and protects creation/renames/deletion and is never held in the writeout paths. Signed-off-by: David Sterba --- fs/btrfs/qgroup.c | 2 +- 1 file