On 2024/4/2 21:15, Chunhai Guo wrote:
This adds a special global buffer pool (in the end) for reserved pages.
Using a reserved pool for LZ4 decompression significantly reduces the
time spent on extra temporary page allocation for the extreme cases in
low memory scenarios.
The table below
tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
dev-test
branch HEAD: 1c89beb9534dee8f41a47922b6382809c809506c erofs: do not use
pagepool in z_erofs_gbuf_growsize()
elapsed time: 772m
configs tested: 102
configs skipped: 3
The following configs have been built
This adds a special global buffer pool (in the end) for reserved pages.
Using a reserved pool for LZ4 decompression significantly reduces the
time spent on extra temporary page allocation for the extreme cases in
low memory scenarios.
The table below shows the reduction in time spent on page
On 2024/4/2 16:45, Chunhai Guo wrote:
This adds a special global buffer pool (in the end) for reserved pages.
Using a reserved pool for LZ4 decompression significantly reduces the
time spent on extra temporary page allocation for the extreme cases in
low memory scenarios.
The table below
On Thu, 28 Mar 2024 16:33:52 +, David Howells wrote:
> The primary purpose of these patches is to rework the netfslib writeback
> implementation such that pages read from the cache are written to the cache
> through ->writepages(), thereby allowing the fscache page flag to be
> retired.
>
>
It will cost more time if compressed buffers are allocated on demand for
low-latency algorithms (like lz4) so EROFS uses per-CPU buffers to keep
compressed data if in-place decompression is unfulfilled. While it is kind
of wasteful of memory for a device with hundreds of CPUs, and only a small
在 2024/4/2 17:22, Gao Xiang 写道:
>
> On 2024/4/2 17:27, Chunhai Guo wrote:
>> Let's use alloc_pages_bulk_array() for simplicity and get rid of
>> unnecessary pagepool.
>>
>> Signed-off-by: Chunhai Guo
>> ---
> Would you mind adding a changelog here next time? no
> matter how short the text is.
>
>
On 2024/4/2 17:27, Chunhai Guo wrote:
Let's use alloc_pages_bulk_array() for simplicity and get rid of
unnecessary pagepool.
Signed-off-by: Chunhai Guo
---
Would you mind adding a changelog here next time? no
matter how short the text is.
Reviewed-by: Gao Xiang
Thanks,
Gao Xiang
Let's use alloc_pages_bulk_array() for simplicity and get rid of
unnecessary pagepool.
Signed-off-by: Chunhai Guo
---
fs/erofs/zutil.c | 67 ++--
1 file changed, 31 insertions(+), 36 deletions(-)
diff --git a/fs/erofs/zutil.c b/fs/erofs/zutil.c
index
-20240402
(https://download.01.org/0day-ci/archive/20240402/202404021750.7eqaokab-...@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git
ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce (this is a W=1 build):
(https://download.01.org/0day-ci/archive/20240402
On 2024/4/2 16:40, Chunhai Guo wrote:
Let's use alloc_pages_bulk_array() for simplicity and get rid of
unnecessary pagepool.
Signed-off-by: Chunhai Guo
---
fs/erofs/zutil.c | 64 +++-
1 file changed, 30 insertions(+), 34 deletions(-)
diff
David Howells wrote:
> +struct netfs_io_request *new_netfs_begin_writethrough(struct kiocb *iocb,
> size_t len)
> +{
> + struct netfs_io_request *wreq = NULL;
> + struct netfs_inode *ictx = netfs_inode(file_inode(iocb->ki_filp));
> +
> + mutex_lock(>wb_lock);
> +
> + wreq =
This adds a special global buffer pool (in the end) for reserved pages.
Using a reserved pool for LZ4 decompression significantly reduces the
time spent on extra temporary page allocation for the extreme cases in
low memory scenarios.
The table below shows the reduction in time spent on page
Simon Horman wrote:
> > + op->store.size = len,
>
> nit: this is probably more intuitively written using len;
I'm not sure it makes a difference, but switching 'size' to 'len' in kafs is a
separate thing that doesn't need to be part of this patchset.
David
Let's use alloc_pages_bulk_array() for simplicity and get rid of
unnecessary pagepool.
Signed-off-by: Chunhai Guo
---
fs/erofs/zutil.c | 64 +++-
1 file changed, 30 insertions(+), 34 deletions(-)
diff --git a/fs/erofs/zutil.c b/fs/erofs/zutil.c
index
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