third of its original.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/node.c | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index fef5c68..d234c6e 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1955,6 +
> -Original Message-
> From: Jaegeuk Kim [mailto:jaeg...@kernel.org]
> Sent: Tuesday, November 07, 2017 11:41 AM
> To: Fan Li
> Cc: 'Chao Yu'; 'Chao Yu'; linux-ker...@vger.kernel.org;
> linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH] f2fs
solving the
shortage
of the free nids. This patch fixes that.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/node.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 3d0d1be..5cef118 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/
> -Original Message-
> From: Chao Yu [mailto:c...@kernel.org]
> Sent: Friday, November 03, 2017 9:16 PM
> To: Fan Li; 'Chao Yu'; 'Jaegeuk Kim'
> Cc: linux-ker...@vger.kernel.org; linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH RESEND] f2fs: mo
> -Original Message-
> From: Chao Yu [mailto:yuch...@huawei.com]
> Sent: Friday, November 03, 2017 4:54 PM
> To: Fan Li; 'Chao Yu'; 'Jaegeuk Kim'
> Cc: linux-ker...@vger.kernel.org; linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH RESEND] f2fs: mo
ans all free nids before next_scan_nid
are already in free list;
and use next_scan_nid as the end of the range since all free nids which
are scanned in scan_free_nid_bits must be smaller next_scan_nid.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/f2fs.h | 1 +
fs/f2fs/no
Use a slightly easier way to calculate last_nid.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/node.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 7834097..55ab330 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/
> -Original Message-
> From: Chao Yu [mailto:c...@kernel.org]
> Sent: Wednesday, November 01, 2017 8:47 PM
> To: Fan Li; 'Jaegeuk Kim'
> Cc: linux-ker...@vger.kernel.org; linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH] f2fs: modify the procedur
> -Original Message-
> From: Chao Yu [mailto:c...@kernel.org]
> Sent: Tuesday, October 31, 2017 10:32 PM
> To: Fan Li; 'Jaegeuk Kim'
> Cc: linux-ker...@vger.kernel.org; linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH] f2fs: modify the procedur
ist;
and use next_scan_nid as the end of the range since all free nids which
are scanned must be smaller next_scan_nid.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/f2fs.h | 1 +
fs/f2fs/node.c | 30 ++
2 files changed, 27 insertions(+), 4
> -Original Message-
> From: Jaegeuk Kim [mailto:jaeg...@kernel.org]
> Sent: Monday, October 30, 2017 5:30 PM
> To: Chao Yu
> Cc: Fan Li; 'Chao Yu'; linux-ker...@vger.kernel.org;
> linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH] f2fs: add a
better that we don't assume @start_nid is the first nid of the nat
block it's in.
3. Use " if (nat_blk->entries[i].block_addr != NULL_ADDR)" to explicitly
comfirm the value of block_addr
use constant to make sure the codes is right, even if the value of
NULL_ADDR changes.
This patch add a new function to move nid from one state to another.
Move operation is heavily used, by adding a new function for it
we can cut down some branches from several flow.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/node.
The index of segment which the next nat block is in has only one different
bit than the current one, so to get the next nat address, we can simply
alter that one bit.
Signed-off-by: Fan Li <fanofcode...@samsung.com>
---
fs/f2fs/node.h | 5 +
1 file changed, 1 insertion(+), 4 del
> -Original Message-
> From: Jaegeuk Kim [mailto:jaeg...@kernel.org]
> Sent: Thursday, March 09, 2017 5:56 AM
> To: Fan Li
> Cc: linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH] f2fs: adjust the way of calculating nat block
>
> On 03/0
use a slightly simpler expression to calculate nat block with nid.
Signed-off-by: Fan Li <fanofcode...@samsung.com>
---
fs/f2fs/node.h | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h
index 2f9603f..f9fb5b8 100644
--- a/fs/f2fs/node.h
source region and destination region is actually the same part of
the same file.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/file.c |7 +++
1 file changed, 7 insertions(+)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index d5f60ad..116946b 100644
--- a/fs/f2fs/file.c
> -Original Message-
> From: Chao Yu [mailto:chao2...@samsung.com]
> Sent: Tuesday, March 01, 2016 5:53 PM
> To: 'Fan Li'; 'Jaegeuk Kim'
> Cc: linux-f2fs-devel@lists.sourceforge.net
> Subject: RE: [f2fs-dev] [PATCH] f2fs: modify the readahead method in
> r
> -Original Message-
> From: Junling Zheng [mailto:zhengjunl...@huawei.com]
> Sent: Wednesday, February 24, 2016 4:34 PM
> To: Fan Li; 'Jaegeuk Kim'
> Cc: heyun...@huawei.com; linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH v2] f2fs-tools:
.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/node.c |9 -
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 511c0e7..6d8f107 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1080,12 +1080,11 @@ void ra_nod
> -Original Message-
> From: Jaegeuk Kim [mailto:jaeg...@kernel.org]
> Sent: Saturday, February 06, 2016 12:08 PM
> To: Fan Li
> Cc: 'Junling Zheng'; heyun...@huawei.com;
> linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH v2] f2fs-tools: set s
> -Original Message-
> From: Junling Zheng [mailto:zhengjunl...@huawei.com]
> Sent: Thursday, February 04, 2016 10:52 AM
> To: Fan Li; 'Jaegeuk Kim'; heyun...@huawei.com
> Cc: linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH v2] f2fs-tools:
.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/gc.c | 33 +
1 file changed, 25 insertions(+), 8 deletions(-)
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index c958321..47ade35 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -245,6 +245,18 @@ static
section size first to prevent such problem.
Signed-off-by: Fan Li <fanofcode...@samsung.com>
---
mkfs/f2fs_format.c |3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/mkfs/f2fs_format.c b/mkfs/f2fs_format.c
index 66d7342..3366302 100644
--- a/mkfs/f2fs_format.c
+++ b/
section size to prevent such problem.
Signed-off-by: Fan Li <fanofcode...@samsung.com>
---
mkfs/f2fs_format.c |3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/mkfs/f2fs_format.c b/mkfs/f2fs_format.c
index 66d7342..aab2491 100644
--- a/mkfs/f2fs_format.c
+++ b/mkfs/f2fs_
.
I also found another two problems and describe them in comment
beginning with "FIXME". I tried to fix them, but my method is too complex,
so I mark it and hope someone else has better solution.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2
> -Original Message-
> From: Chao Yu [mailto:chao2...@samsung.com]
> Sent: Monday, January 04, 2016 6:00 PM
> To: 'Fan Li'; 'Jaegeuk Kim'
> Cc: linux-f2fs-devel@lists.sourceforge.net
> Subject: RE: [f2fs-dev] [PATCH 2/3] f2fs: support finding extents after isize
&g
> -Original Message-
> From: Jaegeuk Kim [mailto:jaeg...@kernel.org]
> Sent: Monday, January 04, 2016 2:56 PM
> To: Fan Li
> Cc: 'Chao Yu'; linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH 2/3] f2fs: support finding extents after isize
>
>
> -Original Message-
> From: Jaegeuk Kim [mailto:jaeg...@kernel.org]
> Sent: Tuesday, January 05, 2016 7:14 AM
> To: Fan Li
> Cc: 'Chao Yu'; linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH 2/3] f2fs: support finding extents after isize
>
>
> -Original Message-
> From: Jaegeuk Kim [mailto:jaeg...@kernel.org]
> Sent: Tuesday, January 05, 2016 11:08 AM
> To: Fan Li; ""@jaegeuk-2.local
> Cc: 'Chao Yu'; linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH 2/3] f2fs: support
> -Original Message-
> From: Chao Yu [mailto:chao2...@samsung.com]
> Sent: Thursday, December 31, 2015 2:34 PM
> To: 'Fan Li'; 'Jaegeuk Kim'
> Cc: linux-f2fs-devel@lists.sourceforge.net
> Subject: RE: [f2fs-dev] [PATCH 2/3] f2fs: support finding extents after isize
&g
> -Original Message-
> From: Jaegeuk Kim [mailto:jaeg...@kernel.org]
> Sent: Friday, January 01, 2016 11:08 AM
> To: Fan Li
> Cc: linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH 1/3] f2fs: avoid calling i_size_read when it's
> unnecessary
>
> -Original Message-
> From: Jaegeuk Kim [mailto:jaeg...@kernel.org]
> Sent: Thursday, December 31, 2015 2:28 AM
> To: Fan Li
> Cc: linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH 1/3] f2fs: avoid calling i_size_read when it's
> un
> -Original Message-
> From: Chao Yu [mailto:c...@kernel.org]
> Sent: Wednesday, December 30, 2015 9:28 PM
> To: Fan Li; 'Jaegeuk Kim'
> Cc: linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH 2/3] f2fs: support finding extents after isize
>
>
i_size_read does more than reading a value, it's best that we use it
only when we need it.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/data.c |4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index d67c599..a9a4d89
at isize, it will also return the extent beyond isize,
which is outside the range.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/data.c | 80 +++-
1 file changed, 27 insertions(+), 53 deletions(-)
diff --git a/fs/f2fs/data.
check map->m_len right after it changes to avoid excess call
to update dnode_of_data.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/data.c | 69 +---
1 file changed, 36 insertions(+), 33 deletions(-)
diff --git
@lend of filemap_write_and_wait_range is supposed to be a "offset
in bytes where the range ends (inclusive)". Subtract 1 to avoid
writing an extra page.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/file.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
map.m_len should be reduced after skip a block
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/file.c |1 +
1 file changed, 1 insertion(+)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 5fac4f2..9949d0f 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1759,6 +
1. Skip __reverse_ulong if the bitmap is empty.
2. Reduce branches and codes.
According to my test, the performance of this new version is 5% higher on
an empty bitmap of 64bytes, and remains about the same in the worst scenario.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
f
In bitmaps of f2fs, bytes are sorted in ascending order, but bits in a byte are
sorted
in descending order. It seems to be the reason why __reverse_ulong is needed.
May I ask why f2fs bitmap apply such order?
> -Original Message-
> From: Jaegeuk Kim [mailto:jaeg...@kernel.org]
> Sent:
now we update extent by range, fofs may not be on the largest
extent if the new extent overlaps with it. so add a new function
to drop largest extent properly.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/extent_cache.c |9 +
1 file changed, 5 insertions
> -Original Message-
> From: Jaegeuk Kim [mailto:jaeg...@kernel.org]
> Sent: Wednesday, September 16, 2015 2:37 AM
> To: Fan Li
> Cc: linux-f2fs-devel@lists.sourceforge.net
> Subject: Re: [f2fs-dev] [PATCH v2] f2fs: optimize code of
> f2fs_update_extent_t
the
procedues that split extent into two.
Signed-off-by: Fan li <fanofcode...@samsung.com>
---
fs/f2fs/extent_cache.c | 150
+++-
1 file changed, 58 insertions(+), 92 deletions(-)
diff --git a/fs/f2fs/extent_cache.c b/fs/f2fs/extent_cache.c
to insert this extent directly, and save the time of searching
down the tree.
As long as tree remains unchanged between lookup and insertion, this
would work fine. And the new lookup would be useful when add
multi-blocks extent support for insertion interface.
Signed-off-by: Fan li fanofcode
Hi,
2013-10-28 (월), 08:54 +, Fan Li:
There is a HTML error in the previous email, so I send this one.If you
already received this before, please ignore it.Sorry for the inconvenience
This patch change the method of calculating the number of summary blocks
in function
can't be split to two pages, so it could take more
space than the sum of its size, the current version seems not to take it into
account.
Signed-off-by: Fan Li fanofcode...@samsung.com
---
fs/f2fs/segment.c | 14 ++
1 file changed, 6 insertions(+), 8 deletions(-)
diff --git a/fs/f2fs
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