path")
Signed-off-by: Lu Fengqi
---
fs/btrfs/inode.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index d54bdef16d8d..9c5e9629eb6c 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1369,7 +1369,8 @@ static no
The @found is always false when it comes to the if branch. Besides, the
bool type is more suitable for @found. Change the return value of the
function and its caller to bool as well.
Signed-off-by: Lu Fengqi
---
fs/btrfs/extent_io.c | 31 +++
fs/btrfs
On Wed, Nov 28, 2018 at 09:01:42AM +0200, Nikolay Borisov wrote:
>
>
>On 28.11.18 г. 5:21 ч., Lu Fengqi wrote:
>> The @found is always false when it comes to the if branch. Besides, the
>> bool type is more suitable for @found.
>
>Well if you are ranging the type of f
On Wed, Nov 28, 2018 at 09:48:07AM +0200, Nikolay Borisov wrote:
>
>
>On 28.11.18 г. 9:46 ч., Christoph Hellwig wrote:
>> On Wed, Nov 28, 2018 at 09:44:59AM +0200, Nikolay Borisov wrote:
>>>
>>>
>>> On 28.11.18 г. 5:07 ч., Lu Fengqi wrote:
>>>
The generic_write_checks will check the combination of IOCB_NOWAIT and
!IOCB_DIRECT.
Signed-off-by: Lu Fengqi
---
fs/btrfs/file.c | 4
1 file changed, 4 deletions(-)
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 3835bb8c146d..190db9a685a2 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs
When it is introduced at commit f094ac32aba3 ("Btrfs: fix NULL pointer
after aborting a transaction"), it's useless.
Signed-off-by: Lu Fengqi
---
fs/btrfs/transaction.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index f9
The @found is always false when it comes to the if branch. Besides, the
bool type is more suitable for @found.
Signed-off-by: Lu Fengqi
---
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
The generic/513 tell that cloning into a file did not strip security
privileges (suid, capabilities) like a regular write would.
Signed-off-by: Lu Fengqi
---
The xfs and ocfs2 call generic_remap_file_range_prep to drop file
privileges, I'm not sure whether btrfs should do the same thing.
Any
al cleanup work to
>cleanup_extent_op so it can be used by check_ref_cleanup() in order to
>unify the extent op handling.
>
>Signed-off-by: Josef Bacik
One nitpick below.
Reviewed-by: Lu Fengqi
>---
> fs/btrfs/extent-tree.c | 36 +++-
> 1 file cha
On Wed, Nov 14, 2018 at 05:05:48PM +0100, David Sterba wrote:
>On Wed, Nov 14, 2018 at 03:24:56PM +0800, Lu Fengqi wrote:
>> =
>> WARNING: suspicious RCU usage
>> 4.20.0-rc2+ #23 Tainted: G O
>>
: 1f265fc6f58b ("btrfs: harden agaist duplicate fsid on scanned devices")
Signed-off-by: Lu Fengqi
---
fs/btrfs/volumes.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 2186300bab91..6039ae5c549e 100644
--- a/fs/btrfs/volum
On Tue, Nov 13, 2018 at 02:45:45PM +0100, David Sterba wrote:
>On Tue, Nov 06, 2018 at 02:41:09PM +0800, Lu Fengqi wrote:
>> This patchset can be fetched from github:
>> https://github.com/littleroad/linux.git dedupe_latest
>>
>> Now the new base is v4.20-rc1.
>
&g
From: Qu Wenruo
Add disable subcommand for dedupe command group.
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
Documentation/btrfs-dedupe-inband.asciidoc | 5 +++
btrfs-completion | 2 +-
cmds-dedupe-ib.c | 41
From: Qu Wenruo
Add basic ioctl header and command group framework for later use.
Alone with basic man page doc.
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
Documentation/Makefile.in | 1 +
Documentation/btrfs-dedupe-inband.asciidoc | 40
From: Qu Wenruo
Introduce reconfigure subcommand to co-operate with new kernel ioctl
modification.
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
Documentation/btrfs-dedupe-inband.asciidoc | 7 +++
btrfs-completion | 2 +-
cmds-dedupe-ib.c
From: Qu Wenruo
Add enable subcommand for dedupe commmand group.
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
Documentation/btrfs-dedupe-inband.asciidoc | 114 +-
btrfs-completion | 6 +-
cmds-dedupe-ib.c | 238
Patchset can be fetched from github:
https://github.com/littleroad/btrfs-progs.git dedupe_latest
Inband dedupe(in-memory backend only) ioctl support for btrfs-progs.
v7 changes:
Update ctree.h to follow kernel structure change
Update print-tree to follow kernel structure change
V8 changes:
From: Qu Wenruo
Add status subcommand for dedupe command group.
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
Documentation/btrfs-dedupe-inband.asciidoc | 3 +
btrfs-completion | 2 +-
cmds-dedupe-ib.c | 80
normal 128M extent size is supported. More types will
follow soon.
Signed-off-by: Wang Xiaoguang
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
fs/btrfs/ctree.h | 43 ++---
fs/btrfs/extent-tree.c | 48 ---
fs/btrfs/file.c | 30
implement restore all dedupe hash in memory rb-tree, with LRU
behavior to control the limit.
Signed-off-by: Wang Xiaoguang
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
fs/btrfs/ctree.h | 4 +-
fs/btrfs/dedupe.h | 15 ++
fs/btrfs/extent-tree.c | 31 +++-
fs/btrfs/extent_io.c
From: Wang Xiaoguang
Add generic function to initialize dedupe info.
Signed-off-by: Qu Wenruo
Signed-off-by: Wang Xiaoguang
Reviewed-by: Josef Bacik
Signed-off-by: Lu Fengqi
---
fs/btrfs/Makefile | 2 +-
fs/btrfs/dedupe.c | 169 +
fs
).
Signed-off-by: Qu Wenruo
Signed-off-by: Wang Xiaoguang
Signed-off-by: Lu Fengqi
---
fs/btrfs/dedupe.c | 50 ++
fs/btrfs/dedupe.h | 17 +---
fs/btrfs/disk-io.c | 3 ++
fs/btrfs/ioctl.c | 85 ++
fs
-off-by: Qu Wenruo
Signed-off-by: Wang Xiaoguang
Reviewed-by: Josef Bacik
Signed-off-by: Lu Fengqi
---
fs/btrfs/dedupe.c | 210 +-
1 file changed, 209 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/dedupe.c b/fs/btrfs/dedupe.c
index 951fefd19fde
From: Wang Xiaoguang
Introduce the header for btrfs in-band(write time) de-duplication
framework and needed header.
The new de-duplication framework is going to support 2 different dedupe
methods and 1 dedupe hash.
Signed-off-by: Qu Wenruo
Signed-off-by: Wang Xiaoguang
Signed-off-by: Lu
possible race.
Cc: Mark Fasheh
Signed-off-by: Qu Wenruo
Signed-off-by: Wang Xiaoguang
Signed-off-by: Lu Fengqi
---
fs/btrfs/dedupe.c | 131 +++---
1 file changed, 125 insertions(+), 6 deletions(-)
diff --git a/fs/btrfs/dedupe.c b/fs/btrfs/dedupe.c
index
--block-size 64k /mnt
# btrfs dedupe enable --force --limit-hash 1m /mnt
Will reset blocksize to default value:
dedupe blocksize: 128K << reset
dedupe hash limit nr: 1m
Suggested-by: David Sterba
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
fs/btrfs/dedupe.c
returned -ENOENT in relocate_tree_block() and continue
balancing.
Reported-by: Satoru Takeuchi
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
fs/btrfs/relocation.c | 19 ---
1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/rel
This patchset can be fetched from github:
https://github.com/littleroad/linux.git dedupe_latest
Now the new base is v4.20-rc1.
Normal test cases from auto group exposes no regression, and ib-dedupe
group can pass without problem.
xfstests ib-dedupe group can be fetched from github:
From: Wang Xiaoguang
Introduce static function inmem_add() to add hash into in-memory tree.
And now we can implement the btrfs_dedupe_add() interface.
Signed-off-by: Qu Wenruo
Signed-off-by: Wang Xiaoguang
Reviewed-by: Josef Bacik
Signed-off-by: Lu Fengqi
---
fs/btrfs/dedupe.c | 150
-by: Qu Wenruo
Reviewed-by: Josef Bacik
Signed-off-by: Lu Fengqi
---
fs/btrfs/delayed-ref.c | 53 +-
fs/btrfs/delayed-ref.h | 15
2 files changed, 52 insertions(+), 16 deletions(-)
diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c
From: Wang Xiaoguang
Add ordered-extent support for dedupe.
Note, current ordered-extent support only supports non-compressed source
extent.
Support for compressed source extent will be added later.
Signed-off-by: Qu Wenruo
Signed-off-by: Wang Xiaoguang
Reviewed-by: Josef Bacik
---
From: Wang Xiaoguang
Unlike in-memory or on-disk dedupe method, only SHA256 hash method is
supported yet, so implement btrfs_dedupe_calc_hash() interface using
SHA256.
Signed-off-by: Qu Wenruo
Signed-off-by: Wang Xiaoguang
Reviewed-by: Josef Bacik
Signed-off-by: Lu Fengqi
---
fs/btrfs
On Tue, Oct 30, 2018 at 05:14:42PM -0700, Omar Sandoval wrote:
>From: Omar Sandoval
>
>There's a race between close_ctree() and cleaner_kthread().
>close_ctree() sets btrfs_fs_closing(), and the cleaner stops when it
>sees it set, but this is racy; the cleaner might have already checked
>the bit
On Tue, Oct 30, 2018 at 05:14:42PM -0700, Omar Sandoval wrote:
>From: Omar Sandoval
>
>There's a race between close_ctree() and cleaner_kthread().
>close_ctree() sets btrfs_fs_closing(), and the cleaner stops when it
>sees it set, but this is racy; the cleaner might have already checked
>the bit
p_transaction(), another
fsstress is running btrfs_commit_transaction(). The
btrfs_finish_extent_commit() may get the same range as
btrfs_destroy_pinned_extent() got, which causes the pinned underflow.
Signed-off-by: Lu Fengqi
---
fs/btrfs/disk-io.c | 12 +++-
1 file changed, 11 i
When running generic/475, pinned underflow may occur. This patch will
fix this problem, but there are still other warnings need to addressed in
this case.
Patch 1-2 introduce a macro and wrappers to help detect underflow
Patch 3 the fix patch of pinned underflow
Lu Fengqi (2):
btrfs: extent
Introduce a new wrapper update_bytes_pinned to replace open coded
bytes_pinned modifiers.
Signed-off-by: Lu Fengqi
---
fs/btrfs/extent-tree.c | 9 +
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index c0147a1307e7
From: Qu Wenruo
Although we have space_info::bytes_may_use underflow detection in
btrfs_free_reserved_data_space_noquota(), we have more callers who are
subtracting number from space_info::bytes_may_use.
So instead of doing underflow detection for every caller, introduce a
new wrapper
The find_ref_head shouldn't return the first entry even if no exact match
is found. So move the hidden behavior to higher level.
Besides, remove the useless local variables in the btrfs_select_ref_head.
Signed-off-by: Lu Fengqi
---
fs/btrfs/delayed-ref.c | 45
On Thu, Oct 11, 2018 at 01:51:37PM +0200, David Sterba wrote:
>On Thu, Oct 11, 2018 at 01:40:32PM +0800, Lu Fengqi wrote:
>> There is no functional change. Just improve readablity.
>>
>> PATCH 1-4 parameter cleanup patches
>> PATCH 5 cleanup about btrfs_select_ref
On Thu, Oct 11, 2018 at 02:45:04PM +0200, David Sterba wrote:
>On Thu, Oct 11, 2018 at 03:28:15PM +0300, Nikolay Borisov wrote:
>> > I noticed that there is a macro called SCRAMBLE_DELAYED_REFS in the
>> > extent-tree.c. I am a bit curious whether it has been forgotten by
>> > everyone, I have not
On Thu, Oct 11, 2018 at 03:28:15PM +0300, Nikolay Borisov wrote:
>
>
>On 11.10.2018 15:15, Lu Fengqi wrote:
>> On Thu, Oct 11, 2018 at 09:40:52AM +0300, Nikolay Borisov wrote:
>>>
>>>
>>> On 11.10.2018 08:40, Lu Fengqi wrote:
>>>> If
On Thu, Oct 11, 2018 at 09:40:52AM +0300, Nikolay Borisov wrote:
>
>
>On 11.10.2018 08:40, Lu Fengqi wrote:
>> If the return value of find_ref_head() is NULL, the only possibility is
>> that delayed_refs' head ref rbtree is empty. Hence, the second
>> find_ref_head()
There is no reason to put this check in (!qgroup)'s else branch because if
qgroup is null, it will goto out directly. So move it out to reduce
indent.
No Functional Change.
Signed-off-by: Lu Fengqi
---
fs/btrfs/qgroup.c | 13 +++--
1 file changed, 7 insertions(+), 6 deletions(-)
diff
There is no functional change. Just improve readablity.
PATCH 1-4 parameter cleanup patches
PATCH 5 cleanup about btrfs_select_ref_head
PATCH 6 switch int to bool; add some comment
Lu Fengqi (6):
btrfs: delayed-ref: pass delayed_refs directly to
btrfs_select_ref_head()
btrfs: delayed-ref
Since trans is only used for referring to delayed_refs, there is no need
to pass it instead of delayed_refs to btrfs_delayed_ref_lock().
No functional change.
Signed-off-by: Lu Fengqi
---
fs/btrfs/delayed-ref.c | 5 +
fs/btrfs/delayed-ref.h | 2 +-
fs/btrfs/extent-tree.c | 2 +-
3 files
Since trans is only used for referring to delayed_refs, there is no need
to pass it instead of delayed_refs to btrfs_select_ref_head().
No functional change.
Signed-off-by: Lu Fengqi
---
fs/btrfs/delayed-ref.c | 5 +
fs/btrfs/delayed-ref.h | 2 +-
fs/btrfs/extent-tree.c | 2 +-
3 files
If the return value of find_ref_head() is NULL, the only possibility is
that delayed_refs' head ref rbtree is empty. Hence, the second
find_ref_head() is pointless.
Besides, the local variables loop and start are unnecessary, just remove
them.
Signed-off-by: Lu Fengqi
---
fs/btrfs/delayed
The avg_delayed_ref_runtime can be referenced from the transaction handle.
Signed-off-by: Lu Fengqi
---
fs/btrfs/ctree.h | 3 +--
fs/btrfs/extent-tree.c | 5 ++---
fs/btrfs/inode.c | 5 ++---
fs/btrfs/transaction.c | 2 +-
4 files changed, 6 insertions(+), 9 deletions(-)
diff --git
It can be referenced from the transaction handle.
Signed-off-by: Lu Fengqi
---
fs/btrfs/ctree.h | 3 +--
fs/btrfs/extent-tree.c | 6 +++---
fs/btrfs/inode.c | 2 +-
fs/btrfs/transaction.c | 2 +-
4 files changed, 6 insertions(+), 7 deletions(-)
diff --git a/fs/btrfs/ctree.h b/fs
Using bool is more suitable than int here, and add the comment about the
return_bigger.
Signed-off-by: Lu Fengqi
---
fs/btrfs/delayed-ref.c | 10 ++
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c
index 2726d2fb4bbe
types is moved first in
>check_file_extent,
>followed by the code to handle inline extents and finally the existing code to
>handle regular/prealloc extents is left intact.
>
>This patchset brings no functional changes.
For the series,
Reviewed-by: Lu Fengqi
--
Thanks,
Lu
&g
On Thu, Sep 13, 2018 at 12:12:27PM +0300, Nikolay Borisov wrote:
>
>
>On 13.09.2018 11:20, Lu Fengqi wrote:
>> In the check_inode_item function, the extent_end variable used to store the
>> end of the last file extent that has checked. When it passes to
>> check
ader is read. Fix this by checking the
>return value and properly handling NULL by setting ret to -EIO and
>returning gracefully.
>
>CID: 1087503
>Signed-off-by: Nikolay Borisov
Reviewed-by: Lu Fengqi
--
Thanks,
Lu
>---
> fs/btrfs/ctree.c | 4
> 1 file changed, 4 in
hen the loop is prematurely terminated by 'goto out'.
>On the other hand, if the error value is ENOENT then a subsequent
>if branch is executed that always re-assigns 'ret' and in case it's
>an error just terminates the loop. No functional changes.
>
>CID: 1437392
>Signed-off-by: Nik
On Thu, Sep 13, 2018 at 04:30:28PM +0800, Lu Fengqi wrote:
>On Tue, Sep 11, 2018 at 04:41:21PM +0200, David Sterba wrote:
>>On Tue, Sep 04, 2018 at 08:42:01PM +0800, Lu Fengqi wrote:
>>> The extent_end will be used to check whether there is gap between this
>>
On Tue, Sep 11, 2018 at 04:41:21PM +0200, David Sterba wrote:
>On Tue, Sep 04, 2018 at 08:42:01PM +0800, Lu Fengqi wrote:
>> The extent_end will be used to check whether there is gap between this
>> extent and next extent. If it is not calibrated, check_file_extent will
("btrfs-progs: check: introduce function to check file
extent")
Signed-off-by: Lu Fengqi
---
check/mode-lowmem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/check/mode-lowmem.c b/check/mode-lowmem.c
index 1bce44f5658a..370318f0e631 100644
--- a/check/mode-lowmem.c
+
On Tue, Sep 11, 2018 at 07:57:03PM +0800, Qu Wenruo wrote:
>
>
>On 2018/9/11 下午7:29, Lu Fengqi wrote:
>> The function btrfs_link_subvol is responsible to link the subvolume to
>> the specified directory, which is the opposite of what
>> btrfs_unlink_subvol does.
On Mon, May 07, 2018 at 11:10:23AM +0800, Lu Fengqi wrote:
>This patchset will add undelete-subvol subcommand for btrfs rescue.
>
Hi David
Although there are some disagreements about undeleting subvolumes online
implementation, the offline version is considered more acceptable. Would
yo
Add the undelete subcommand, this is depend on the
BTRFS_IOC_SUBVOL_UNDELETE ioctl.
Signed-off-by: Lu Fengqi
---
btrfs-completion | 2 +-
cmds-subvolume.c | 70
2 files changed, 71 insertions(+), 1 deletion(-)
diff --git a/btrfs-completion b
Copied from uapi/linux/btrfs.h.
Signed-off-by: Lu Fengqi
---
ioctl.h | 7 +++
1 file changed, 7 insertions(+)
diff --git a/ioctl.h b/ioctl.h
index 709e996f401c..75978a4e8265 100644
--- a/ioctl.h
+++ b/ioctl.h
@@ -670,6 +670,11 @@ struct btrfs_ioctl_send_args_64 {
} __attribute__((packed
This ioctl will provide user the ability to recover the subvolume of the
given id to the given directory.
Note: It will lock fs_info->cleaner_mutex to keep the cleaner kthread
from deleting the subvolume which we want to recover.
Signed-off-by: Lu Fengqi
---
fs/btrfs/ioctl.c |
The function will do the following things which are almost the opposite
of what btrfs_delete_subvolume() does:
1. link the subvolume to the parent specified;
2. clear root flag and set root_refs to 1;
3. add the subvol to the uuid_tree;
4. delete the orphan_item.
Signed-off-by: Lu Fengqi
subvolume.
# btrfs subvolume undelete [-n ]
btrfs online undelete version:
https://github.com/littleroad/linux.git undelete
btrfs-progs online undelete version:
https://github.com/littleroad/btrfs-progs.git online_undelete
Issue: #82
Lu Fengqi (4):
btrfs: factor out btrfs_link_subvol from
The function btrfs_link_subvol is responsible to link the subvolume to
the specified directory, which is the opposite of what
btrfs_unlink_subvol does.
No functional change.
Signed-off-by: Lu Fengqi
---
fs/btrfs/ioctl.c | 64 +++-
1 file changed, 41
Both of btrfs_update_inode() and btrfs_add_root_ref() may fail because
of ENOMEM. So there's no reason to panic here, we can replace BUG_ON()
with btrfs_abort_transaction() here.
Signed-off-by: Lu Fengqi
---
fs/btrfs/ioctl.c | 10 --
1 file changed, 8 insertions(+), 2 deletions(-)
diff
The extent_end will be used to check whether there is gap between this
extent and next extent. If it is not calibrated, check_file_extent will
mistake that there are gaps between the remaining extents.
Signed-off-by: Lu Fengqi
---
check/mode-lowmem.c | 1 +
1 file changed, 1 insertion(+)
diff
From: Qu Wenruo
Add enable subcommand for dedupe commmand group.
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
Documentation/btrfs-dedupe-inband.asciidoc | 114 +-
btrfs-completion | 6 +-
cmds-dedupe-ib.c | 238
From: Qu Wenruo
Introduce reconfigure subcommand to co-operate with new kernel ioctl
modification.
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
Documentation/btrfs-dedupe-inband.asciidoc | 7 +++
btrfs-completion | 2 +-
cmds-dedupe-ib.c
From: Qu Wenruo
Add disable subcommand for dedupe command group.
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
Documentation/btrfs-dedupe-inband.asciidoc | 5 +++
btrfs-completion | 2 +-
cmds-dedupe-ib.c | 41
From: Qu Wenruo
Add status subcommand for dedupe command group.
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
Documentation/btrfs-dedupe-inband.asciidoc | 3 +
btrfs-completion | 2 +-
cmds-dedupe-ib.c | 80
Patchset can be fetched from github:
https://github.com/littleroad/btrfs-progs.git dedupe_latest
Inband dedupe(in-memory backend only) ioctl support for btrfs-progs.
v7 changes:
Update ctree.h to follow kernel structure change
Update print-tree to follow kernel structure change
V8 changes:
From: Qu Wenruo
Add basic ioctl header and command group framework for later use.
Alone with basic man page doc.
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
Documentation/Makefile.in | 1 +
Documentation/btrfs-dedupe-inband.asciidoc | 40
normal 128M extent size is supported. More types will
follow soon.
Signed-off-by: Wang Xiaoguang
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
fs/btrfs/ctree.h | 43 ++---
fs/btrfs/extent-tree.c | 48 ---
fs/btrfs/file.c | 30
From: Wang Xiaoguang
Introduce static function inmem_add() to add hash into in-memory tree.
And now we can implement the btrfs_dedupe_add() interface.
Signed-off-by: Qu Wenruo
Signed-off-by: Wang Xiaoguang
Reviewed-by: Josef Bacik
Signed-off-by: Lu Fengqi
---
fs/btrfs/dedupe.c | 150
This patchset can be fetched from github:
https://github.com/littleroad/linux.git dedupe_latest
Now the new base is v4.19-rc2, and drop the patch about compression
which conflict with compression heuristic.
Normal test cases from auto group exposes no regression, and ib-dedupe
group can pass
--block-size 64k /mnt
# btrfs dedupe enable --force --limit-hash 1m /mnt
Will reset blocksize to default value:
dedupe blocksize: 128K << reset
dedupe hash limit nr: 1m
Suggested-by: David Sterba
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
fs/btrfs/dedupe.c
From: Qu Wenruo
Since the introduction of btrfs dedupe tree, it's possible that balance can
race with dedupe disabling.
When this happens, dedupe_enabled will make btrfs_get_fs_root() return
PTR_ERR(-ENOENT).
But due to a bug in error handling branch, when this happens
backref_cache->nr_nodes
From: Wang Xiaoguang
Unlike in-memory or on-disk dedupe method, only SHA256 hash method is
supported yet, so implement btrfs_dedupe_calc_hash() interface using
SHA256.
Signed-off-by: Qu Wenruo
Signed-off-by: Wang Xiaoguang
Reviewed-by: Josef Bacik
Signed-off-by: Lu Fengqi
---
fs/btrfs
).
Signed-off-by: Qu Wenruo
Signed-off-by: Wang Xiaoguang
Signed-off-by: Lu Fengqi
---
fs/btrfs/dedupe.c | 50 +
fs/btrfs/dedupe.h | 17 +++---
fs/btrfs/disk-io.c | 3 ++
fs/btrfs/ioctl.c | 65
possible race.
Cc: Mark Fasheh
Signed-off-by: Qu Wenruo
Signed-off-by: Wang Xiaoguang
Signed-off-by: Lu Fengqi
---
fs/btrfs/dedupe.c | 131 +++---
1 file changed, 125 insertions(+), 6 deletions(-)
diff --git a/fs/btrfs/dedupe.c b/fs/btrfs/dedupe.c
index
From: Wang Xiaoguang
Add generic function to initialize dedupe info.
Signed-off-by: Qu Wenruo
Signed-off-by: Wang Xiaoguang
Reviewed-by: Josef Bacik
Signed-off-by: Lu Fengqi
---
fs/btrfs/Makefile | 2 +-
fs/btrfs/dedupe.c | 169 +
fs
implement restore all dedupe hash in memory rb-tree, with LRU
behavior to control the limit.
Signed-off-by: Wang Xiaoguang
Signed-off-by: Qu Wenruo
Signed-off-by: Lu Fengqi
---
fs/btrfs/ctree.h | 4 +-
fs/btrfs/dedupe.h | 15 ++
fs/btrfs/extent-tree.c | 31 +++-
fs/btrfs/extent_io.c
-by: Qu Wenruo
Reviewed-by: Josef Bacik
Signed-off-by: Lu Fengqi
---
fs/btrfs/delayed-ref.c | 53 +-
fs/btrfs/delayed-ref.h | 15
2 files changed, 52 insertions(+), 16 deletions(-)
diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c
From: Wang Xiaoguang
Add ordered-extent support for dedupe.
Note, current ordered-extent support only supports non-compressed source
extent.
Support for compressed source extent will be added later.
Signed-off-by: Qu Wenruo
Signed-off-by: Wang Xiaoguang
Reviewed-by: Josef Bacik
---
From: Wang Xiaoguang
Introduce the header for btrfs in-band(write time) de-duplication
framework and needed header.
The new de-duplication framework is going to support 2 different dedupe
methods and 1 dedupe hash.
Signed-off-by: Qu Wenruo
Signed-off-by: Wang Xiaoguang
Signed-off-by: Lu
-off-by: Qu Wenruo
Signed-off-by: Wang Xiaoguang
Reviewed-by: Josef Bacik
Signed-off-by: Lu Fengqi
---
fs/btrfs/dedupe.c | 210 +-
1 file changed, 209 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/dedupe.c b/fs/btrfs/dedupe.c
index 951fefd19fde
for the qgroup_reserved that does not exist and add a
comment about use_global_rsv.
Fixes: c4c129db5da8 ("btrfs: drop unused parameter qgroup_reserved")
Signed-off-by: Lu Fengqi
---
Changelog:
v2->v3: update the subject and commit message to reflect this is a fixes
v1->v2: break the
David Sterba 于2018年8月8日周三 下午9:57写道：
>
> On Wed, Aug 08, 2018 at 11:04:37AM +0800, Lu Fengqi wrote:
> > On Tue, Aug 07, 2018 at 06:19:12PM +0200, David Sterba wrote:
> > >On Sat, Aug 04, 2018 at 09:10:54PM +0800, Lu Fengqi wrote:
> > >> After btrfs_qgroup_r
On Wed, Aug 08, 2018 at 02:11:24PM +0800, Qu Wenruo wrote:
>
>
>On 2018年08月08日 00:39, David Sterba wrote:
>> On Sun, Aug 05, 2018 at 06:39:57PM +0800, Lu Fengqi wrote:
>>> This patchset will add the BTRFS_IOC_SUBVOL_UNDELETE ioctl for online
>>> btrfs subv
On Tue, Aug 07, 2018 at 06:19:12PM +0200, David Sterba wrote:
>On Sat, Aug 04, 2018 at 09:10:54PM +0800, Lu Fengqi wrote:
>> After btrfs_qgroup_reserve_meta_prealloc(), num_bytes will be assigned
>> again by btrfs_calc_trans_metadata_size(). Therefore, once block_rsv
>> fail
On Tue, Aug 07, 2018 at 06:39:50PM +0200, David Sterba wrote:
>On Sun, Aug 05, 2018 at 06:39:57PM +0800, Lu Fengqi wrote:
>> This patchset will add the BTRFS_IOC_SUBVOL_UNDELETE ioctl for online
>> btrfs subvolume undelete.
>>
>> And btrfs subvolume undelete subcomma
nce level 0 qgroup cannot be used/inherited by any other subvolume,
>let's remove them automatically when subvolume is deleted
>(to be precise, when the subvolume root is dropped).
>
>Reviewed-by: Lu Fengqi
>Reviewed-by: Qu Wenruo
>Signed-off-by: Misono Tomohiro
>---
>v2 ->
On Mon, Jul 30, 2018 at 01:03:00PM +0800, Qu Wenruo wrote:
>Ping the 3rd time?
>
>Or should I just rebase the patchset?
Hi Qu
Could you rebase this patchset? Because I want to test existing test cases
with enabled quota, mkfs_qgroup seems to ease my workload.
--
Thanks,
Lu
>
>Thanks,
>Qu
>
The function will traverse the root from the fs_info->dead_roots and try
to call btrfs_undelete_subvolume() to recover them.
Note: It will lock fs_info->cleaner_mutex to keep the cleaner kthread
from deleting the subvolume which we want to recover.
Signed-off-by: Lu Fengqi
---
fs/btrfs/i
to dir
named to .
# btrfs subvolume undelete [-p ]
btrfs online undelete version:
https://github.com/littleroad/linux.git undelete
btrfs-progs online undelete version:
https://github.com/littleroad/btrfs-progs.git online_undelete
Issue: #82
Lu Fengqi (4):
btrfs: factor out btrfs_link_subvol
The function btrfs_link_subvol is responsible to link the subvolume to
the specified directory, which is the opposite of what
btrfs_unlink_subvol does.
No functional change.
Signed-off-by: Lu Fengqi
---
fs/btrfs/ioctl.c | 65 ++--
1 file changed, 41
The function will do the following things which are almost the opposite
of what btrfs_delete_subvolume() does:
1. link the subvolume to the parent specified;
2. clear root flag and set root_refs to 1;
3. add the subvol to the uuid_tree;
4. delete the orphan_item.
Signed-off-by: Lu Fengqi
Both of btrfs_update_inode() and btrfs_add_root_ref() may fail because
of ENOMEM. So there's no reason to panic here, we can replace BUG_ON()
with btrfs_abort_transaction() here.
Signed-off-by: Lu Fengqi
---
fs/btrfs/ioctl.c | 10 --
1 file changed, 8 insertions(+), 2 deletions(-)
diff
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