linux.git/fs/f2fs/segment.h, branch v4.10

f2fs: detect wrong layout

2016-12-07T22:37:33+00:00

Previous mkfs.f2fs allows small partition inappropriately, so f2fs should detect
that as well.

Refer this in f2fs-tools.

mkfs.f2fs: detect small partition by overprovision ratio and # of segments

Reported-and-Tested-by: Eric Biggers 
Signed-off-by: Jaegeuk Kim

f2fs: use BIO_MAX_PAGES for bio allocation

2016-11-23T20:11:07+00:00

We don't need to allocate bio partially in order to maximize sequential writes.

Signed-off-by: Jaegeuk Kim

f2fs: count dirty inodes to flush node pages during checkpoint

2016-11-23T20:11:04+00:00

If there are a lot of dirty inodes, we need to flush all of them when doing
checkpoint. So, we need to count this for enough free space.

Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: check free_sections for defragmentation

2016-09-12T17:30:41+00:00

Fix wrong condition check for defragmentation of a file.

Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: not allow to write illegal blkaddr

2016-08-24T17:16:14+00:00

we came across an error as below:

[build_nat_area_bitmap:1710] nid[0x    1718] addr[0x         1c18ddc] ino[0x    1718]
[build_nat_area_bitmap:1710] nid[0x    1719] addr[0x         1c193d5] ino[0x    1719]
[build_nat_area_bitmap:1710] nid[0x    171a] addr[0x         1c1736e] ino[0x    171a]
[build_nat_area_bitmap:1710] nid[0x    171b] addr[0x        58b3ee8f] ino[0x815f92ed]
[build_nat_area_bitmap:1710] nid[0x    171c] addr[0x         fcdc94b] ino[0x49366377]
[build_nat_area_bitmap:1710] nid[0x    171d] addr[0x        7cd2facf] ino[0xb3c55300]
[build_nat_area_bitmap:1710] nid[0x    171e] addr[0x        bd4e25d0] ino[0x77c34c09]

... ...

[build_nat_area_bitmap:1710] nid[0x    1718] addr[0x         1c18ddc] ino[0x    1718]
[build_nat_area_bitmap:1710] nid[0x    1719] addr[0x         1c193d5] ino[0x    1719]
[build_nat_area_bitmap:1710] nid[0x    171a] addr[0x         1c1736e] ino[0x    171a]
[build_nat_area_bitmap:1710] nid[0x    171b] addr[0x        58b3ee8f] ino[0x815f92ed]
[build_nat_area_bitmap:1710] nid[0x    171c] addr[0x         fcdc94b] ino[0x49366377]
[build_nat_area_bitmap:1710] nid[0x    171d] addr[0x        7cd2facf] ino[0xb3c55300]
[build_nat_area_bitmap:1710] nid[0x    171e] addr[0x        bd4e25d0] ino[0x77c34c09]

One nat block may be stepped by a data block, so this patch forbid to
write if the blkaddr is illegal

Signed-off-by: Yunlei He 
Signed-off-by: Jaegeuk Kim

f2fs: add maximum prefree segments

2016-07-15T22:21:21+00:00

In 1TB storage, we need to admit 22841 prefree segments, which can consume
too much segments.
This patch sets 8GB in max. prefree segments in that case.

Signed-off-by: Jaegeuk Kim

f2fs: avoid writing node/metapages during writes

2016-07-06T17:44:09+00:00

Let's keep more node/meta pages in run time.

Signed-off-by: Jaegeuk Kim

f2fs: introduce mode=lfs mount option

2016-06-13T18:55:21+00:00

This mount option is to enable original log-structured filesystem forcefully.
So, there should be no random writes for main area.

Especially, this supports host-managed SMR device.

Signed-off-by: Jaegeuk Kim

f2fs: do not skip writing data pages

2016-06-03T01:05:20+00:00

For data pages, let's try to flush as much as possible in background.

On /dev/pmem0,

1. dd if=/dev/zero of=/mnt/test/testfile bs=1M count=2048 conv=fsync
 Before : 800 MB/s
 After  : 1.1 GB/s

2. dd if=/dev/zero of=/mnt/test/testfile bs=1M count=2048
 Before : 1.3 GB/s
 After  : 2.2 GB/s

Signed-off-by: Jaegeuk Kim

f2fs: flush inode metadata when checkpoint is doing

2016-06-03T01:05:11+00:00

This patch registers all the inodes which have dirty metadata to sync when
checkpoint is doing.

Signed-off-by: Jaegeuk Kim