Hi Greg,
On 2019/7/22 13:05, Greg Kroah-Hartman wrote:
> On Mon, Jul 22, 2019 at 01:26:16PM +1000, Stephen Rothwell wrote:
>> Hi Gao,
>>
>> On Mon, 22 Jul 2019 10:50:20 +0800 Gao Xiang wrote:
>>>
>>> diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h
>>> new file mode 100644
>>> index
On Mon, Jul 22, 2019 at 01:26:16PM +1000, Stephen Rothwell wrote:
> Hi Gao,
>
> On Mon, 22 Jul 2019 10:50:20 +0800 Gao Xiang wrote:
> >
> > diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h
> > new file mode 100644
> > index ..e418725abfd6
> > --- /dev/null
> > +++
Hi Amir,
On 2019/7/22 12:39, Amir Goldstein wrote:
> On Mon, Jul 22, 2019 at 5:54 AM Gao Xiang wrote:
>>
>> Currently kernel has scattered tagged pointer usages
>> hacked by hand in plain code, without a unique and
>> portable functionset to highlight the tagged pointer
>> itself and wrap these
On Mon, Jul 22, 2019 at 5:54 AM Gao Xiang wrote:
>
> Currently kernel has scattered tagged pointer usages
> hacked by hand in plain code, without a unique and
> portable functionset to highlight the tagged pointer
> itself and wrap these hacked code in order to clean up
> all over meaningless
Hi Gao,
On Mon, 22 Jul 2019 10:50:20 +0800 Gao Xiang wrote:
>
> diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h
> new file mode 100644
> index ..e418725abfd6
> --- /dev/null
> +++ b/fs/erofs/erofs_fs.h
> @@ -0,0 +1,316 @@
> +/* SPDX-License-Identifier: GPL-2.0 OR Apache-2.0 */
Hi Stephen,
On 2019/7/22 11:26, Stephen Rothwell wrote:
> Hi Gao,
>
> On Mon, 22 Jul 2019 10:50:20 +0800 Gao Xiang wrote:
>>
>> diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h
>> new file mode 100644
>> index ..e418725abfd6
>> --- /dev/null
>> +++ b/fs/erofs/erofs_fs.h
>> @@
This patch adds a dedicated shrinker targeting to free
unneeded memory consumed by a number of erofs in-memory
data structures.
Like F2FS and UBIFS, it also adds:
- sbi->umount_mutex to avoid races on shrinker and put_super;
- sbi->shrinker_run_no to not revisit recently scanned objects.
This patch introduces the basic inplace fixed-sized
output decompression implementation for erofs
filesystem.
In constant to fixed-sized input compression, it has
fixed-sized capacity for each compressed cluster to
contain compressed data with the following advantages:
1) improved storage
This patch adds EROFS compression indexes support,
including legacy and compacted 2/4B indexes.
In addition, it introduces an iterable L2P mapping
operation called 'z_erofs_map_blocks_iter'.
Compared with 'erofs_map_blocks', it avoids a number
of redundant 'release and regrab' processes if they
Add basic tracepoints for ->readpage{,s}, ->lookup,
->destroy_inode, fill_inode and map_blocks.
Signed-off-by: Gao Xiang
---
include/trace/events/erofs.h | 241 +++
1 file changed, 241 insertions(+)
create mode 100644 include/trace/events/erofs.h
diff --git
This implements xattr and posixacl functionalities.
1) Inline and shared xattrs are introduced for flexibility.
Specifically, if the same xattr is used for a large number of
inodes or the size of a xattr is so large that unsuitable to
inline, a shared xattr will be used instead in xattr
This documents key features, usage, and
on-disk design of erofs.
Signed-off-by: Gao Xiang
---
Documentation/filesystems/erofs.txt | 211
1 file changed, 211 insertions(+)
create mode 100644 Documentation/filesystems/erofs.txt
diff --git
- erofs_sb_info:
contains erofs-specific in-memory information.
- erofs_vnode:
contains vfs_inode and other fs-specific information.
same as super block, the only one in-memory definition exists.
- erofs_map_blocks
Logical to physical block mapping, used by erofs_map_blocks().
For each physical cluster, there is a straight-forward
way of allocating a fixed or variable-sized array to
record the corresponding file pages for its decompression
if we decide to decompress these pages asynchronously
(eg. read-ahead case), however it will take variable-sized
on-heap memory
This patch adds to support special inode, such as
block dev, char, socket, pipe inode.
Signed-off-by: Gao Xiang
---
fs/erofs/inode.c | 27 +--
1 file changed, 25 insertions(+), 2 deletions(-)
diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c
index
This adds functions for directory, mainly readdir.
Signed-off-by: Gao Xiang
---
fs/erofs/dir.c | 147 +
1 file changed, 147 insertions(+)
create mode 100644 fs/erofs/dir.c
diff --git a/fs/erofs/dir.c b/fs/erofs/dir.c
new file mode 100644
index
Currently kernel has scattered tagged pointer usages
hacked by hand in plain code, without a unique and
portable functionset to highlight the tagged pointer
itself and wrap these hacked code in order to clean up
all over meaningless magic masks.
This patch introduces simple generic methods to
This patch introduces another concept used by decompress
subsystem called 'workstation'. It can be seen as
a sparse array that stores pointers pointed to data
structures related to the corresponding physical clusters.
All lookups are protected by RCU read lock. Besides,
reference count and
This commit adds the on-disk layout header file of erofs.
On-disk format is compatible with erofs-staging added in 4.19.
In addition, add EROFS_SUPER_MAGIC_V1 to magic.h.
Signed-off-by: Gao Xiang
---
fs/erofs/erofs_fs.h| 316 +
This patch adds decompression backend to EROFS, which
supports uncompressed and LZ4 compressed data.
For compressed data, it uses the following strategy:
1) If outputsize is very small (totally less than a threshold),
decompress to the per-CPU buffer and do memcpy directly
in order to avoid
This patch adds strategies which can be selected
by users in order to cache both incomplete ends of
compressed physical clusters as a complement of
in-place I/O in order to boost random read, but
it costs more memory than the in-place I/O only.
Signed-off-by: Gao Xiang
---
fs/erofs/Kconfig|
compressed data will be usually loaded into last pages of
the extent (the last page for 4k) for in-place decompression
(more specifically, in-place IO), as ilustration below,
start of compressed logical extent
| end of this logical extent
|
This patch introduces per-CPU buffers in order for
the upcoming generic decompression framework to use.
Note that I tried to use in-kernel per-CPU buffer or
per-CPU page approaches to clean up further, however
noticeable performanace regression (about 2% for
sequential read) was observed.
Let's
This adds core functions to get, read an inode.
It adds statx support as well.
Signed-off-by: Gao Xiang
---
fs/erofs/inode.c | 291 +++
1 file changed, 291 insertions(+)
create mode 100644 fs/erofs/inode.c
diff --git a/fs/erofs/inode.c
This patch introduces an temporary _on-stack_ page
pool to reuse the freed page directly as much as
it can for better performance and release all pages
at a time, it also slightly reduces the possibility of
the potential memory allocation failure.
Signed-off-by: Gao Xiang
---
This commit adds functions for meta and raw data, and also
provides address_space_operations for raw data access.
Signed-off-by: Gao Xiang
---
fs/erofs/data.c | 423
1 file changed, 423 insertions(+)
create mode 100644 fs/erofs/data.c
diff
This commit adds functions that transfer names to inodes.
Signed-off-by: Gao Xiang
---
fs/erofs/namei.c | 246 +++
1 file changed, 246 insertions(+)
create mode 100644 fs/erofs/namei.c
diff --git a/fs/erofs/namei.c b/fs/erofs/namei.c
new file mode
Changelog from v2:
o kill sbi->dev_name and clean up all failure handling in
fill_super() suggested by Al.
Note that the initialzation of managed_cache is now moved
after s_root is assigned since it's more preferred to iput()
in .put_super() and all inodes should be evicted before
This commit adds Makefile and Kconfig for erofs, and
updates Makefile and Kconfig files in the fs directory.
Signed-off-by: Gao Xiang
---
fs/Kconfig| 1 +
fs/Makefile | 1 +
fs/erofs/Kconfig | 45 +
fs/erofs/Makefile | 9 +
4
In order to introducing shrinker solution for erofs,
let's manage all mounted erofs instances at first.
Signed-off-by: Gao Xiang
---
fs/erofs/Makefile | 2 +-
fs/erofs/internal.h | 13 +
fs/erofs/super.c| 9 +
fs/erofs/utils.c| 32
This commit adds erofs super block operations, including (u)mount,
remount_fs, show_options, statfs, in addition to some private
icache management functions.
Signed-off-by: Gao Xiang
---
fs/erofs/super.c | 438 +++
1 file changed, 438 insertions(+)
On 2019/7/21 ??12:12, Gao Xiang wrote:
>
>
> On 2019/7/21 12:05, Al Viro wrote:
>> On Sun, Jul 21, 2019 at 11:08:42AM +0800, Gao Xiang wrote:
>>
>>> It is for debugging use as you said below, mainly for our internal
>>> testers whose jobs are
>>> to read kmsg logs and catch kernel
Remove the unused file hal_phy.c. No function from this file is used
in the driver code and it is not listed in the Makefile.
Signed-off-by: Michael Straube
---
drivers/staging/rtl8723bs/hal/hal_phy.c | 157
1 file changed, 157 deletions(-)
delete mode 100644
Commit e99e88a9d2b06 ("treewide: setup_timer() -> timer_setup()") has
updated the parameters of 'poll_for_irq()' but not the comment above the
function.
Update the comment and fix a typo.
s/visronic/visornic/
Signed-off-by: Christophe JAILLET
---
drivers/staging/unisys/visornic/visornic_main.c
On Sun, Jul 21, 2019 at 11:29:19AM +0200, Greg Kroah-Hartman wrote:
> On Sun, Jul 21, 2019 at 11:13:26AM +0200, Hennie Muller wrote:
> > Reindent multiline function calls to be tab aligned, instead of open brace
> > aligned. This fixes multiple "WARNING: line over 80 characters" generated
> > by
Reindent multiline function calls to be tab aligned, instead of open brace
aligned. This fixes multiple "WARNING: line over 80 characters" generated
by checkpatch.
Signed-off-by: Hennie Muller
---
drivers/staging/wlan-ng/cfg80211.c| 55 ++---
drivers/staging/wlan-ng/hfa384x_usb.c | 282
On Sun, Jul 21, 2019 at 11:13:26AM +0200, Hennie Muller wrote:
> Reindent multiline function calls to be tab aligned, instead of open brace
> aligned. This fixes multiple "WARNING: line over 80 characters" generated
> by checkpatch.
>
> Signed-off-by: Hennie Muller
> ---
>
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