On 2019/7/29 14:51, Gao Xiang wrote:
> Tidy up relative order of variables / declarations in internal.h,
> and moving some local static functions out to other files.
>
> No logic change.
>
> Signed-off-by: Gao Xiang
Reviewed-by: Chao Yu
Thanks,
___
On 2019/7/29 14:51, Gao Xiang wrote:
> It was used for Linux backward compatibility, and no use
> for upstream kernel.
>
> Signed-off-by: Gao Xiang
Reviewed-by: Chao Yu
Thanks,
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On 2019/7/29 14:51, Gao Xiang wrote:
> The main change is to reserve all checksums except for superblock,
> since it's more useful to do block-based verity for read-only fs.
>
> Some comments change as well, which is minor.
>
> Signed-off-by: Gao Xiang
Reviewed-by: Chao Yu
Thanks,
___
On 2019/7/29 14:51, Gao Xiang wrote:
> dummy functions erofs_{get,list}xattr should be inlined
> without xattr enabled.
>
> Signed-off-by: Yue Hu
> [ Gao Xiang : this patch was "staging: erofs: remove needless
> dummy functions of erofs_{get,list}xattr. "]
> Signed-off-by: Gao Xiang
On 2019/7/29 14:51, Gao Xiang wrote:
> Keep in line with erofs-outofstaging patchset as well, see
> https://lore.kernel.org/linux-fsdevel/20190725095658.155779-1-gaoxian...@huawei.com/
>
> Signed-off-by: Gao Xiang
Reviewed-by: Chao Yu
Thanks,
___
dev
On 2019/7/29 14:51, Gao Xiang wrote:
> - Use the correct style for all SPDX License Identifiers;
> - Get rid of the unnecessary license boilerplate;
> - Use "GPL-2.0-only" instead of "GPL-2.0" suggested-by Stephen.
>
> Signed-off-by: Gao Xiang
Reviewed-by: Chao Yu
Thanks,
_
In rtl8192_init_priv_variable allocation for priv->pFirmware may fail,
so a null check is necessary.priv->pFirmware is accessed later in
rtl8192_adapter_start. I added the check and made appropriate changes
to propagate the errno to the caller.
---
Update v2: fixed style errors
Update V3: fixed pr
From: Arnd Bergmann
Date: Tue, 30 Jul 2019 21:50:28 +0200
> Each of these drivers has a copy of the same trivial helper function to
> convert the pointer argument and then call the native ioctl handler.
>
> We now have a generic implementation of that, so use it.
>
> Acked-by: Greg Kroah-Hartma
From: Dexuan Cui Sent: Thursday, July 18, 2019 8:23 PM
>
> The VP ASSIST PAGE is an "overlay" page (see Hyper-V TLFS's Section
> 5.2.1 "GPA Overlay Pages" for the details) and here is an excerpt:
>
> "
> The hypervisor defines several special pages that "overlay" the guest's
> Guest Physical Add
Each of these drivers has a copy of the same trivial helper function to
convert the pointer argument and then call the native ioctl handler.
We now have a generic implementation of that, so use it.
Acked-by: Greg Kroah-Hartman
Acked-by: Michael S. Tsirkin
Reviewed-by: Jarkko Sakkinen
Reviewed-
We don't need dev_err() messages when platform_get_irq() fails now that
platform_get_irq() prints an error message itself when something goes
wrong. Let's remove these prints with a simple semantic patch.
//
@@
expression ret;
struct platform_device *E;
@@
ret =
(
platform_get_irq(E, ...)
|
plat
On Tue, Jul 30, 2019 at 09:30:58AM -0500, Navid Emamdoost wrote:
> Allocation for priv->pFirmware may fail, so a null check is necessary.
> priv->pFirmware is accessed later in rtl8192_adapter_start. I added the
> check and made appropriate changes to propagate the errno to the caller.
>
> Update
Allocation for priv->pFirmware may fail, so a null check is necessary.
priv->pFirmware is accessed later in rtl8192_adapter_start. I added the
check and made appropriate changes to propagate the errno to the caller.
Update: fixed style errors
Signed-off-by: Navid Emamdoost
---
drivers/staging/
While do COMPILE_TEST build without CONFIG_NETDEVICES,
we get Kconfig warning:
WARNING: unmet direct dependencies detected for PHYLIB
Depends on [n]: NETDEVICES [=n]
Selected by [y]:
- OCTEON_ETHERNET [=y] && STAGING [=y] && (CAVIUM_OCTEON_SOC && NETDEVICES
[=n] || COMPILE_TEST [=y])
Repor
On Tue, Jul 30, 2019 at 11:36:06AM +0200, Greg KH wrote:
> On Tue, Jul 30, 2019 at 02:58:44PM +0530, Bharath Vedartham wrote:
> > put_page() to put_user_page*()
>
> What does this mean?
That must have been a mistake! I just wanted to forward this patch to
the Linux-kernel-mentees mailing list. TH
On Tue, Jul 30, 2019 at 02:58:44PM +0530, Bharath Vedartham wrote:
> put_page() to put_user_page*()
What does this mean?
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put_page() to put_user_page*()
Reply-To:
In-Reply-To: <1564058658-3551-1-git-send-email-linux.b...@gmail.com>
On Thu, Jul 25, 2019 at 06:14:18PM +0530, Bharath Vedartham wrote:
[Forwarding patch to linux-kernel-mentees mailing list]
> For pages that were retained via get_user_pages*(), release th
On Thu, Jul 25, 2019 at 11:03:49PM +0530, Hariprasad Kelam wrote:
> This function simply returns &rtw_regdom_rd . So replace this function
> with actual code
>
> Signed-off-by: Hariprasad Kelam
> ---
> drivers/staging/rtl8723bs/os_dep/wifi_regd.c | 9 +
> 1 file changed, 1 insertion(+),
On 7/27/19 11:57 AM, Paul Kocialkowski wrote:
> Hi Hans,
>
> On Fri 26 Jul 19, 10:33, Hans Verkuil wrote:
>> On 7/25/19 8:55 PM, Paul Kocialkowski wrote:
>>> HEVC/H.265 stateless support for V4L2 and Cedrus
>>>
>>> This is early support for HEVC/H.265 stateless decoding in V4L2,
>>> including both
Hi Greg,
On 2019/7/30 15:20, Greg Kroah-Hartman wrote:
> On Mon, Jul 29, 2019 at 02:51:38PM +0800, Gao Xiang wrote:
>> - Use the correct style for all SPDX License Identifiers;
>> - Get rid of the unnecessary license boilerplate;
>> - Use "GPL-2.0-only" instead of "GPL-2.0" suggested-by Stephen.
>
On Mon, Jul 29, 2019 at 02:51:38PM +0800, Gao Xiang wrote:
> - Use the correct style for all SPDX License Identifiers;
> - Get rid of the unnecessary license boilerplate;
> - Use "GPL-2.0-only" instead of "GPL-2.0" suggested-by Stephen.
Note, either tag works just fine, they are identical. I'll t
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 density
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
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 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
---
fs/erofs/internal.h
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 fold
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 compa
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/internal.h |
This documents key features, usage, and
on-disk design of erofs.
Signed-off-by: Gao Xiang
---
Documentation/filesystems/erofs.txt | 221
1 file changed, 221 insertions(+)
create mode 100644 Documentation/filesystems/erofs.txt
diff --git a/Documentation/filesystems/
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
r
This commit adds functions that transfer names to inodes.
Signed-off-by: Gao Xiang
---
fs/erofs/namei.c | 247 +++
1 file changed, 247 insertions(+)
create mode 100644 fs/erofs/namei.c
diff --git a/fs/erofs/namei.c b/fs/erofs/namei.c
new file mode 10
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.
Sign
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 00
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 spin_lo
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 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 b/fs/erofs/ino
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 | 36
fs/erofs/Makefile | 9 +
4 files cha
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 b6ea997bc4ae..637bf6e4de
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 l
( Add more linuxfs folks... )
Hi,
We'd like to hear if there are potential suggestions or
maybe objections of EROFS upstreaming stuffs. If any,
we still have time and we can improve it in this round.
As related materials mentioned before, the goal of EROFS is
to save extra storage space with gua
- 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().
Sig
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 +
include/uapi/linux/magi
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 a/in
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 --git
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 | 437 +++
1 file changed, 437 insertions(+)
cr
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