-uninitialized]
kfree(kbs);
^~
Signed-off-by: Li Wang
---
drivers/tty/vt/keyboard.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index 7763862..62f1ecb 100644
--- a/drivers/tty/vt/keyboard.c
+++ b/drivers/tty/vt/keyboard.c
[-Wmaybe-uninitialized]
kfree(kbs);
^~
Signed-off-by: Li Wang
---
drivers/tty/vt/keyboard.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index 7763862..3e73d55 100644
--- a/drivers/tty/vt/keyboard.c
+++ b
Fix the warning: [-Werror=-Wframe-larger-than=]
drivers/vhost/vhost.c: In function log_used:
drivers/vhost/vhost.c:1906:1:
warning: the frame size of 1040 bytes is larger than 1024 bytes
Signed-off-by: Li Wang
---
drivers/vhost/vhost.c | 2 +-
drivers/vhost/vhost.h | 1 +
2 files changed, 2
Fix the warning: [-Werror=-Wframe-larger-than=]
drivers/vhost/vhost.c: In function log_used:
drivers/vhost/vhost.c:1906:1:
warning: the frame size of 1040 bytes is larger than 1024 bytes
Signed-off-by: Li Wang
---
drivers/vhost/vhost.c | 14 ++
1 file changed, 10 insertions(+), 4
m_region_hash dm_log dm_mod
--
Regards,
Li Wang
ptsas libata
nvme_fc scsi_transport_sas nvme_fabrics mptscsih nvme_core
crc32c_intel mptbase scsi_transport_fc dca i2c_algo_bit dm_mirror
dm_region_hash dm_log dm_mod
[ 8162.621090] CR2: 00b8
On Tue, Jun 19, 2018 at 6:41 PM, Li Wang wrote:
> Hi,
>
> I'm hitting this p
ptsas libata
nvme_fc scsi_transport_sas nvme_fabrics mptscsih nvme_core
crc32c_intel mptbase scsi_transport_fc dca i2c_algo_bit dm_mirror
dm_region_hash dm_log dm_mod
[ 8162.621090] CR2: 00b8
On Tue, Jun 19, 2018 at 6:41 PM, Li Wang wrote:
> Hi,
>
> I'm hitting this p
On 30 May 2018 at 20:53, Dan Streetman wrote:
> On Wed, May 30, 2018 at 6:39 AM, Li Wang wrote:
>> The '/sys/../zswap/stored_pages:' keep raising in zswap test with
>> "zswap.max_pool_percent=0" parameter. But theoretically, it should
>> not compres
On 30 May 2018 at 20:53, Dan Streetman wrote:
> On Wed, May 30, 2018 at 6:39 AM, Li Wang wrote:
>> The '/sys/../zswap/stored_pages:' keep raising in zswap test with
>> "zswap.max_pool_percent=0" parameter. But theoretically, it should
>> not compres
ltp_insmod01]
[ 5916.043814] CR2: 00b8
[ 5916.047513] BUG: unable to handle kernel NULL pointer dereference
at 00b8
[ 5916.047537] ---[ end trace 1dddacfb06305174 ]---
--
Regards,
Li Wang
ltp_insmod01]
[ 5916.043814] CR2: 00b8
[ 5916.047513] BUG: unable to handle kernel NULL pointer dereference
at 00b8
[ 5916.047537] ---[ end trace 1dddacfb06305174 ]---
--
Regards,
Li Wang
p
changing.
To solve the issue, this patch adds zswap_is_full() check again after
zswap_shrink() to make sure it's now under the max_pool_percent, and
not to compress/store if reach its limitaion.
Signed-off-by: Li Wang
Cc: Seth Jennings
Cc: Dan Streetman
Cc: Huang Ying
Cc: Yu Zhao
---
p
changing.
To solve the issue, this patch adds zswap_is_full() check again after
zswap_shrink() to make sure it's now under the max_pool_percent, and
not to compress/store if reach its limitaion.
Signed-off-by: Li Wang
Cc: Seth Jennings
Cc: Dan Streetman
Cc: Huang Ying
Cc: Yu Zhao
---
k(). If the
pool size
has been shrinked a little success, zswap will do compress/store pages again.
Then we
get fails on that as above.
Signed-off-by: Li Wang <liw...@redhat.com>
Cc: Seth Jennings <sjenn...@redhat.com>
Cc: Dan Streetman <ddstr...@ieee.org>
Cc: Huang Y
k(). If the
pool size
has been shrinked a little success, zswap will do compress/store pages again.
Then we
get fails on that as above.
Signed-off-by: Li Wang
Cc: Seth Jennings
Cc: Dan Streetman
Cc: Huang Ying
Cc: Yu Zhao
---
mm/zswap.c | 5 +
1 file changed, 5 insertions(+)
dif
x14
-8<---
Any response will be appreciated!
--
Regards,
Li Wang
Email: wangli.a...@gmail.com
x14
-8<---
Any response will be appreciated!
--
Regards,
Li Wang
Email: wangli.a...@gmail.com
On Thu, Oct 26, 2017 at 6:16 PM, Martin Schwidefsky
<schwidef...@de.ibm.com> wrote:
> On Thu, 26 Oct 2017 17:47:39 +0800
> Li Wang <liw...@redhat.com> wrote:
>
>> On Thu, Oct 26, 2017 at 5:26 PM, Martin Schwidefsky
>> <schwidef...@de.ibm.com> wrote:
>>
On Thu, Oct 26, 2017 at 6:16 PM, Martin Schwidefsky
wrote:
> On Thu, 26 Oct 2017 17:47:39 +0800
> Li Wang wrote:
>
>> On Thu, Oct 26, 2017 at 5:26 PM, Martin Schwidefsky
>> wrote:
>> > On Thu, 26 Oct 2017 15:36:10 +0800
>> > Li Wang wrote:
>> >
On Thu, Oct 26, 2017 at 5:26 PM, Martin Schwidefsky
<schwidef...@de.ibm.com> wrote:
> On Thu, 26 Oct 2017 15:36:10 +0800
> Li Wang <liw...@redhat.com> wrote:
>
>> That would be very hard to get -ENOMEM returned in crst_table_upgrade()
>> because the condition(a
On Thu, Oct 26, 2017 at 5:26 PM, Martin Schwidefsky
wrote:
> On Thu, 26 Oct 2017 15:36:10 +0800
> Li Wang wrote:
>
>> That would be very hard to get -ENOMEM returned in crst_table_upgrade()
>> because the condition(addr + len <= TASK_SIZE) makes all 'end' value
off-by: Li Wang <liw...@redhat.com>
---
arch/s390/mm/mmap.c| 6 ++
arch/s390/mm/pgalloc.c | 3 +--
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index 5bea139..8ddb13a 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
off-by: Li Wang
---
arch/s390/mm/mmap.c| 6 ++
arch/s390/mm/pgalloc.c | 3 +--
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index 5bea139..8ddb13a 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -119,6 +11
or: pHyp
Virtualization type: para
L1d cache: 64K
L1i cache: 32K
NUMA node0 CPU(s): 0-15
NUMA node1 CPU(s):
--
Li Wang
liw...@redhat.com
cache: 64K
L1i cache: 32K
NUMA node0 CPU(s): 0-15
NUMA node1 CPU(s):
--
Li Wang
liw...@redhat.com
sorry, ping for comments~
On 15 November 2016 at 17:19, Li Wang <liw...@redhat.com> wrote:
> put_compat_statfs64() does NOT return -1 and setting errno to EOVERFLOW
> when some variables(like: f_bsize) overflowed in the returned struct.
>
> The reason is that the ubuf->f
sorry, ping for comments~
On 15 November 2016 at 17:19, Li Wang wrote:
> put_compat_statfs64() does NOT return -1 and setting errno to EOVERFLOW
> when some variables(like: f_bsize) overflowed in the returned struct.
>
> The reason is that the ubuf->f_blocks is __u64 ty
zeof f_bsize = 4, f_bsize=0
Signed-off-by: Li Wang <liw...@redhat.com>
---
fs/compat.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/compat.c b/fs/compat.c
index bd064a2..543b48c 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -253,9 +253,9 @@ static int put_c
zeof f_bsize = 4, f_bsize=0
Signed-off-by: Li Wang
---
fs/compat.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/compat.c b/fs/compat.c
index bd064a2..543b48c 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -253,9 +253,9 @@ static int put_compat_statfs(struct compat_s
On Mon, Nov 07, 2016 at 11:03:11AM -0700, Andreas Dilger wrote:
> On Nov 7, 2016, at 3:21 AM, Li Wang <liw...@redhat.com> wrote:
> >
> > statfs64() does NOT return -1 and setting errno to EOVERFLOW when some
> > variables(like: f_bsize) overflowed in the returned
On Mon, Nov 07, 2016 at 11:03:11AM -0700, Andreas Dilger wrote:
> On Nov 7, 2016, at 3:21 AM, Li Wang wrote:
> >
> > statfs64() does NOT return -1 and setting errno to EOVERFLOW when some
> > variables(like: f_bsize) overflowed in the returned struct.
> >
>
return 0;
}
$ gcc -m32 statfs64_test.c
$ ./a.out
sizeof f_bsize = 4, f_bsize=0
Signed-off-by: Li Wang <liw...@redhat.com>
---
Notes:
This is my first patch to kernel fs part, I'm not sure if
this one useful, but just want someone have a look.
thanks~
fs/statfs.c | 17 +++
return 0;
}
$ gcc -m32 statfs64_test.c
$ ./a.out
sizeof f_bsize = 4, f_bsize=0
Signed-off-by: Li Wang
---
Notes:
This is my first patch to kernel fs part, I'm not sure if
this one useful, but just want someone have a look.
thanks~
fs/statfs.c | 17 +
1 fil
flash erasing maybe block writing operation.
make erasing operation sleep, when the other thread is in wait queue.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at
xff586a0
LR = 0xff58608
=
So, if there is any thread in wait queue, puts erasing operation into queue.
It makes writing operation have chance to run.
Signed-off-by: Li Wang
---
drivers/mtd/chips/cfi_cmdset_0002.c | 13 +
1 file changed, 13 insertions(+)
diff --git a/d
=
So, if there is any thread in wait queue, puts erasing operation into queue.
It makes writing operation have chance to run.
Signed-off-by: Li Wang li.w...@windriver.com
---
drivers/mtd/chips/cfi_cmdset_0002.c | 13 +
1 file changed, 13 insertions(+)
diff --git a/drivers/mtd
flash erasing maybe block writing operation.
make erasing operation sleep, when the other thread is in wait queue.
--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to majord...@vger.kernel.org
More majordomo info at
Hi,
On 01/03/2014 07:55 AM, Andrew Morton wrote:
On Mon, 30 Dec 2013 21:45:17 +0800 Li Wang wrote:
Analogous to shrink_dcache_parent except that it collects inodes.
It is not very appropriate to be put in dcache.c, but d_walk can only
be invoked from here.
Please cc Dave Chinner on future
Hi,
On 01/03/2014 07:55 AM, Andrew Morton wrote:
On Mon, 30 Dec 2013 21:45:17 +0800 Li Wang liw...@ubuntukylin.com wrote:
Analogous to shrink_dcache_parent except that it collects inodes.
It is not very appropriate to be put in dcache.c, but d_walk can only
be invoked from here.
Please cc
Do we really need clean dcache/icache at the current stage?
That will introduce more code work, so far, iput() will put
those unreferenced inodes into superblock lru list. To free
the inodes inside a specific directory, it seems we do not
have a handy API to use, and need
modify iput() to
Do we really need clean dcache/icache at the current stage?
That will introduce more code work, so far, iput() will put
those unreferenced inodes into superblock lru list. To free
the inodes inside a specific directory, it seems we do not
have a handy API to use, and need
modify iput() to
evicted (due to LRU). When re-accessing '1',
some entries need be reloaded from disk, which is time-consuming.
In this case, cleaning '2' before 'cp -r 3 4' enjoys a good
speedup.
Li Wang (3):
VFS: Add the declaration of shrink_pagecache_parent
Add shrink_pagecache_parent
Fadvise: Add the ability
Signed-off-by: Li Wang
Signed-off-by: Yunchuan Wen
---
mm/fadvise.c |4
1 file changed, 4 insertions(+)
diff --git a/mm/fadvise.c b/mm/fadvise.c
index 3bcfd81..644d32d 100644
--- a/mm/fadvise.c
+++ b/mm/fadvise.c
@@ -113,6 +113,10 @@ SYSCALL_DEFINE4(fadvise64_64, int, fd, loff_t
Signed-off-by: Li Wang
Signed-off-by: Yunchuan Wen
---
include/linux/dcache.h |1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index bf72e9a..6262171 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -249,6 +249,7
Analogous to shrink_dcache_parent except that it collects inodes.
It is not very appropriate to be put in dcache.c, but d_walk can only
be invoked from here.
Signed-off-by: Li Wang
Signed-off-by: Yunchuan Wen
---
fs/dcache.c | 36
1 file changed, 36
Analogous to shrink_dcache_parent except that it collects inodes.
It is not very appropriate to be put in dcache.c, but d_walk can only
be invoked from here.
Signed-off-by: Li Wang liw...@ubuntukylin.com
Signed-off-by: Yunchuan Wen yunchuan...@ubuntukylin.com
---
fs/dcache.c | 36
Signed-off-by: Li Wang liw...@ubuntukylin.com
Signed-off-by: Yunchuan Wen yunchuan...@ubuntukylin.com
---
mm/fadvise.c |4
1 file changed, 4 insertions(+)
diff --git a/mm/fadvise.c b/mm/fadvise.c
index 3bcfd81..644d32d 100644
--- a/mm/fadvise.c
+++ b/mm/fadvise.c
@@ -113,6 +113,10
Signed-off-by: Li Wang liw...@ubuntukylin.com
Signed-off-by: Yunchuan Wen yunchuan...@ubuntukylin.com
---
include/linux/dcache.h |1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index bf72e9a..6262171 100644
--- a/include/linux/dcache.h
+++ b
',
some entries need be reloaded from disk, which is time-consuming.
In this case, cleaning '2' before 'cp -r 3 4' enjoys a good
speedup.
Li Wang (3):
VFS: Add the declaration of shrink_pagecache_parent
Add shrink_pagecache_parent
Fadvise: Add the ability for directory level page cache
ceph find that the page
does not be cached in fscache, then it decides to write this page into
fscache, during this process in cachefiles_write_page(), it found that
object->store_limit_l < 4096 (page->index << 12), it causes panic. Does
it make sense?
Cheers,
Li Wang
On 2013/12/27 6:51,
does not be cached in fscache, then it decides to write this page into
fscache, during this process in cachefiles_write_page(), it found that
object-store_limit_l 4096 (page-index 12), it causes panic. Does
it make sense?
Cheers,
Li Wang
On 2013/12/27 6:51, Milosz Tanski wrote:
Li,
I looked
From: Yunchuan Wen
Add an interface to explicitly synchronize object->store_limit[_l]
with inode->i_size
Signed-off-by: Yunchuan Wen
Signed-off-by: Min Chen
Signed-off-by: Li Wang
---
fs/ceph/cache.h | 10 ++
1 file changed, 10 insertions(+)
diff --git a/fs/ceph/cache.h b/f
From: Yunchuan Wen
Synchronize object->store_limit[_l] with new inode->i_size after file writing.
Signed-off-by: Yunchuan Wen
Signed-off-by: Min Chen
Signed-off-by: Li Wang
---
fs/ceph/file.c |3 +++
1 file changed, 3 insertions(+)
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
From: Yunchuan Wen
The following scripts could easily panic the kernel,
#!/bin/bash
mount -t ceph -o fsc MONADDR:/ cephfs
rm -rf cephfs/foo
dd if=/dev/zero of=cephfs/foo bs=8 count=512
echo 3 > /proc/sys/vm/drop_caches
dd if=cephfs/foo of=/dev/null bs=8 count=1024
This is due to when writing a
, the initialization may have not completed, the code will
reach the ASSERT in fscache_submit_exclusive_op() to cause kernel
bug.
Signed-off-by: Yunchuan Wen
Signed-off-by: Min Chen
Signed-off-by: Li Wang
---
fs/ceph/cache.c |1 +
1 file changed, 1 insertion(+)
diff --git a/fs/ceph/cache.c
, then immediately followed
by a writing, the initialization may have not completed, the code will
reach the ASSERT in fscache_submit_exclusive_op() to cause kernel
bug.
Signed-off-by: Yunchuan Wen yunchuan...@ubuntukylin.com
Signed-off-by: Min Chen minc...@ubuntukylin.com
Signed-off-by: Li Wang liw
From: Yunchuan Wen yunchuan...@ubuntukylin.com
The following scripts could easily panic the kernel,
#!/bin/bash
mount -t ceph -o fsc MONADDR:/ cephfs
rm -rf cephfs/foo
dd if=/dev/zero of=cephfs/foo bs=8 count=512
echo 3 /proc/sys/vm/drop_caches
dd if=cephfs/foo of=/dev/null bs=8 count=1024
From: Yunchuan Wen yunchuan...@ubuntukylin.com
Synchronize object-store_limit[_l] with new inode-i_size after file writing.
Signed-off-by: Yunchuan Wen yunchuan...@ubuntukylin.com
Signed-off-by: Min Chen minc...@ubuntukylin.com
Signed-off-by: Li Wang liw...@ubuntukylin.com
---
fs/ceph/file.c
From: Yunchuan Wen yunchuan...@ubuntukylin.com
Add an interface to explicitly synchronize object-store_limit[_l]
with inode-i_size
Signed-off-by: Yunchuan Wen yunchuan...@ubuntukylin.com
Signed-off-by: Min Chen minc...@ubuntukylin.com
Signed-off-by: Li Wang liw...@ubuntukylin.com
---
fs/ceph
Signed-off-by: Li Wang
---
fs/ceph/cache.h | 13 +
1 file changed, 13 insertions(+)
diff --git a/fs/ceph/cache.h b/fs/ceph/cache.h
index ba94940..da95f61 100644
--- a/fs/ceph/cache.h
+++ b/fs/ceph/cache.h
@@ -67,6 +67,14 @@ static inline int ceph_release_fscache_page(struct page
Currently, if one new page allocated into fscache in readpage(), however,
with no data read into due to error encountered during reading from OSDs,
the slot in fscache is not uncached. This patch fixes this.
Li Wang (2):
ceph: Introduce a routine for uncaching single no data page from
Currently, if one new page allocated into fscache in readpage(), however,
with no data read into due to error encountered during reading from OSDs,
the slot in fscache is not uncached. This patch fixes this.
Signed-off-by: Li Wang
---
fs/ceph/addr.c |1 +
1 file changed, 1 insertion
Currently, if one new page allocated into fscache in readpage(), however,
with no data read into due to error encountered during reading from OSDs,
the slot in fscache is not uncached. This patch fixes this.
Signed-off-by: Li Wang liw...@ubuntukylin.com
---
fs/ceph/addr.c |1 +
1 file
Signed-off-by: Li Wang liw...@ubuntukylin.com
---
fs/ceph/cache.h | 13 +
1 file changed, 13 insertions(+)
diff --git a/fs/ceph/cache.h b/fs/ceph/cache.h
index ba94940..da95f61 100644
--- a/fs/ceph/cache.h
+++ b/fs/ceph/cache.h
@@ -67,6 +67,14 @@ static inline int
Currently, if one new page allocated into fscache in readpage(), however,
with no data read into due to error encountered during reading from OSDs,
the slot in fscache is not uncached. This patch fixes this.
Li Wang (2):
ceph: Introduce a routine for uncaching single no data page from
' could handle directory level
page cache cleaning.
On 2013/12/18 6:05, Dave Chinner wrote:
On Mon, Dec 16, 2013 at 07:00:04AM -0800, Li Wang wrote:
Currently, Linux only support file system wide VFS
cache (dentry cache and page cache) cleaning through
'/proc/sys/vm/drop_caches'. Sometimes
This extension is just add-on extension. The original debugging
capability is still there, and more flexible debugging is now allowed.
On 2013/12/17 17:12, Li Zefan wrote:
On 2013/12/17 15:23, Li Wang wrote:
If we do wanna equip fadvise() with directory level page cache cleaning,
this could
This extension is just add-on extension. The original debugging
capability is still there, and more flexible debugging is now allowed.
On 2013/12/17 17:12, Li Zefan wrote:
On 2013/12/17 15:23, Li Wang wrote:
If we do wanna equip fadvise() with directory level page cache cleaning,
this could
' could handle directory level
page cache cleaning.
On 2013/12/18 6:05, Dave Chinner wrote:
On Mon, Dec 16, 2013 at 07:00:04AM -0800, Li Wang wrote:
Currently, Linux only support file system wide VFS
cache (dentry cache and page cache) cleaning through
'/proc/sys/vm/drop_caches'. Sometimes
semantics keep unchanged, and with add-on
features to do finer granularity cache cleaning should be also
desirable.
On 2013/12/17 11:58, Matthew Wilcox wrote:
On Tue, Dec 17, 2013 at 11:08:16AM +0800, Li Wang wrote:
As far as we know, fadvise(DONTNEED) does not support metadata
cache cleaning. We
that directory?
On 2013/12/17 1:45, Cong Wang wrote:
On Mon, Dec 16, 2013 at 7:00 AM, Li Wang wrote:
This patch extend the 'drop_caches' interface to
support directory level cache cleaning and has a complete
backward compatibility. '{1,2,3}' keeps the same semantics
as before. Besides, "{
Signed-off-by: Li Wang
Signed-off-by: Yunchuan Wen
---
fs/drop_caches.c | 45 +
1 file changed, 37 insertions(+), 8 deletions(-)
diff --git a/fs/drop_caches.c b/fs/drop_caches.c
index 9fd702f..ab31393 100644
--- a/fs/drop_caches.c
+++ b/fs
Signed-off-by: Li Wang
Signed-off-by: Yunchuan Wen
---
include/linux/dcache.h |1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 57e87e7..ce11098 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -247,6 +247,7
Signed-off-by: Li Wang
Signed-off-by: Yunchuan Wen
---
kernel/sysctl.c |6 ++
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 34a6047..2f2d8ab 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1255,12 +1255,10 @@ static struct
Signed-off-by: Li Wang
Signed-off-by: Yunchuan Wen
---
include/linux/mm.h |3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 1cedd00..5e3cc5b 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -17,6 +17,7 @@
#include
Analogous to shrink_dcache_parent except that it collects inodes.
It is not very appropriate to be put in dcache.c, but d_walk can only
be invoked from here.
Signed-off-by: Li Wang
Signed-off-by: Yunchuan Wen
---
fs/dcache.c | 35 +++
1 file changed, 35
up, a maximum 4.29X performance improvements is achieved.
The advantage of directory level page cache cleaning should be
easier to be demonstrated.
Signed-off-by: Li Wang
Signed-off-by: Yunchuan Wen
Li Wang (5):
VFS: Convert drop_caches to accept string
VFS: Convert sysctl_drop_caches to
Analogous to shrink_dcache_parent except that it collects inodes.
It is not very appropriate to be put in dcache.c, but d_walk can only
be invoked from here.
Signed-off-by: Li Wang liw...@ubuntukylin.com
Signed-off-by: Yunchuan Wen yunchuan...@ubuntukylin.com
---
fs/dcache.c | 35
4.29X performance improvements is achieved.
The advantage of directory level page cache cleaning should be
easier to be demonstrated.
Signed-off-by: Li Wang liw...@ubuntukylin.com
Signed-off-by: Yunchuan Wen yunchuan...@ubuntukylin.com
Li Wang (5):
VFS: Convert drop_caches to accept string
VFS
Signed-off-by: Li Wang liw...@ubuntukylin.com
Signed-off-by: Yunchuan Wen yunchuan...@ubuntukylin.com
---
include/linux/dcache.h |1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 57e87e7..ce11098 100644
--- a/include/linux/dcache.h
+++ b
Signed-off-by: Li Wang liw...@ubuntukylin.com
Signed-off-by: Yunchuan Wen yunchuan...@ubuntukylin.com
---
kernel/sysctl.c |6 ++
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 34a6047..2f2d8ab 100644
--- a/kernel/sysctl.c
+++ b
Signed-off-by: Li Wang liw...@ubuntukylin.com
Signed-off-by: Yunchuan Wen yunchuan...@ubuntukylin.com
---
include/linux/mm.h |3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 1cedd00..5e3cc5b 100644
--- a/include/linux/mm.h
Signed-off-by: Li Wang liw...@ubuntukylin.com
Signed-off-by: Yunchuan Wen yunchuan...@ubuntukylin.com
---
fs/drop_caches.c | 45 +
1 file changed, 37 insertions(+), 8 deletions(-)
diff --git a/fs/drop_caches.c b/fs/drop_caches.c
index 9fd702f
that directory?
On 2013/12/17 1:45, Cong Wang wrote:
On Mon, Dec 16, 2013 at 7:00 AM, Li Wang liw...@ubuntukylin.com wrote:
This patch extend the 'drop_caches' interface to
support directory level cache cleaning and has a complete
backward compatibility. '{1,2,3}' keeps the same semantics
as before
semantics keep unchanged, and with add-on
features to do finer granularity cache cleaning should be also
desirable.
On 2013/12/17 11:58, Matthew Wilcox wrote:
On Tue, Dec 17, 2013 at 11:08:16AM +0800, Li Wang wrote:
As far as we know, fadvise(DONTNEED) does not support metadata
cache cleaning. We
Clean up if error occurred rather than going through normal process
Signed-off-by: Li Wang
Signed-off-by: Yunchuan Wen
---
fs/ceph/addr.c |3 +++
1 file changed, 3 insertions(+)
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 1e561c0..97845b4 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph
Signed-off-by: Li Wang
Signed-off-by: Yunchuan Wen
Li Wang (2):
ceph: Clean up if error occurred in finish_read()
ceph: Add necessary clean up if invalid reply received in
handle_reply()
fs/ceph/addr.c|3 +++
net/ceph/osd_client.c |7 +++
2 files changed, 10
Wake up possible waiters, invoke the call back if any, unregister the request
Signed-off-by: Li Wang
Signed-off-by: Yunchuan Wen
---
net/ceph/osd_client.c |7 +++
1 file changed, 7 insertions(+)
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 2b4b32a..a17eaae 100644
Wake up possible waiters, invoke the call back if any, unregister the request
Signed-off-by: Li Wang liw...@ubuntukylin.com
Signed-off-by: Yunchuan Wen yunchuan...@ubuntukylin.com
---
net/ceph/osd_client.c |7 +++
1 file changed, 7 insertions(+)
diff --git a/net/ceph/osd_client.c b/net
Signed-off-by: Li Wang liw...@ubuntukylin.com
Signed-off-by: Yunchuan Wen yunchuan...@ubuntukylin.com
Li Wang (2):
ceph: Clean up if error occurred in finish_read()
ceph: Add necessary clean up if invalid reply received in
handle_reply()
fs/ceph/addr.c|3 +++
net/ceph
Clean up if error occurred rather than going through normal process
Signed-off-by: Li Wang liw...@ubuntukylin.com
Signed-off-by: Yunchuan Wen yunchuan...@ubuntukylin.com
---
fs/ceph/addr.c |3 +++
1 file changed, 3 insertions(+)
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 1e561c0
Hi Yan,
zero_user_segment() has invoked flush_dcache_page() for us, we donnot
wanna flush d-cache twice.
Cheers,
Li Wang
On 11/13/2013 09:19 PM, Yan, Zheng wrote:
On Wed, Nov 13, 2013 at 3:22 PM, Li Wang wrote:
If the length of data to be read in readpage() is exactly
PAGE_CACHE_SIZE
Hi Yan,
zero_user_segment() has invoked flush_dcache_page() for us, we donnot
wanna flush d-cache twice.
Cheers,
Li Wang
On 11/13/2013 09:19 PM, Yan, Zheng wrote:
On Wed, Nov 13, 2013 at 3:22 PM, Li Wang liw...@ubuntukylin.com wrote:
If the length of data to be read in readpage
If the length of data to be read in readpage() is exactly
PAGE_CACHE_SIZE, the original code does not flush d-cache
for data consistency after finishing reading. This patches fixes
this.
Signed-off-by: Li Wang
---
fs/ceph/addr.c |8 ++--
1 file changed, 6 insertions(+), 2 deletions
If the length of data to be read in readpage() is exactly
PAGE_CACHE_SIZE, the original code does not flush d-cache
for data consistency after finishing reading. This patches fixes
this.
Signed-off-by: Li Wang liw...@ubuntukylin.com
---
fs/ceph/addr.c |8 ++--
1 file changed, 6
Currently, if one page allocated into fscache in readpage(), however, with
no-data read, it is not uncached. This patch fixes this.
Signed-off-by: Li Wang
---
fs/cifs/file.c |4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 7f2
Currently, if one page allocated into fscache in readpage(), however, with
no-data read, it is not uncached. This patch fixes this.
Signed-off-by: Li Wang
---
fs/ceph/addr.c |1 +
1 file changed, 1 insertion(+)
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 6df8bd4..be5f4b6 100644
Introduce a routine for uncaching single no-data page, typically
in readpage().
Signed-off-by: Li Wang
---
fs/ceph/cache.h | 13 +
1 file changed, 13 insertions(+)
diff --git a/fs/ceph/cache.h b/fs/ceph/cache.h
index ba94940..eb0ec76 100644
--- a/fs/ceph/cache.h
+++ b/fs/ceph
Implement the routine for uncaching single no-data page, typically
in readpage().
Signed-off-by: Li Wang
---
fs/cifs/fscache.c |7 +++
1 file changed, 7 insertions(+)
diff --git a/fs/cifs/fscache.c b/fs/cifs/fscache.c
index 8d4b7bc..168f184 100644
--- a/fs/cifs/fscache.c
+++ b/fs/cifs
Introduce a new API fscache_readpage_cancel() for uncaching one single
no-data page from fscache.
Signed-off-by: Li Wang
---
include/linux/fscache.h | 11 +++
1 file changed, 11 insertions(+)
diff --git a/include/linux/fscache.h b/include/linux/fscache.h
index 115bb81..f1ed21f 100644
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