linux-stable.git/include/linux/f2fs_fs.h, branch v4.18.2

f2fs: align memory boundary for bitops

2018-03-17T04:57:39+00:00

For example, in arm64, free_nid_bitmap should be aligned to word size in order
to use bit operations.

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

f2fs: wrap all options with f2fs_sb_info.mount_opt

2018-03-17T04:57:30+00:00

This patch merges miscellaneous mount options into struct f2fs_mount_info,
After this patch, once we add new mount option, we don't need to worry
about recovery of it in remount_fs(), since we will recover the
f2fs_sb_info.mount_opt including all options.

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

f2fs: support hot file extension

2018-03-12T23:05:57+00:00

This patch supports to recognize hot file extension in f2fs, so that we
can allocate proper hot segment location for its data, which can lead to
better hot/cold seperation in filesystem.

In addition, we changes a bit on query/add/del operation method for
extension_list sysfs entry as below:

- Query: cat /sys/fs/f2fs//extension_list
- Add: echo 'extension' > /sys/fs/f2fs//extension_list
- Del: echo '!extension' > /sys/fs/f2fs//extension_list
- Add: echo '[h/c]extension' > /sys/fs/f2fs//extension_list
- Del: echo '[h/c]!extension' > /sys/fs/f2fs//extension_list
- [h] means add/del hot file extension
- [c] means add/del cold file extension

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

f2fs: expose extension_list sysfs entry

2018-03-12T23:05:48+00:00

This patch adds a sysfs entry 'extension_list' to support
query/add/del item in extension list.

Query:
cat /sys/fs/f2fs//extension_list

Add:
echo 'extension' > /sys/fs/f2fs//extension_list

Del:
echo '!extension' > /sys/fs/f2fs//extension_list

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

f2fs: support large nat bitmap

2018-03-12T23:05:33+00:00

Previously, we will store all nat version bitmap in checkpoint pack block,
so our total node entry number has a limitation which caused total node
number can not exceed (3900 * 8) block * 455 node/block = 14196000. So
that once user wants to create more nodes in large size image, it becomes
a bottleneck, that's unreasonable.

This patch detects the new layout of nat/sit version bitmap in image in
order to enable supporting large nat bitmap.

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

f2fs: don't put dentry page in pagecache into highmem

2018-03-12T23:05:03+00:00

Previous dentry page uses highmem, which will cause panic in platforms
using highmem (such as arm), since the address space of dentry pages
from highmem directly goes into the decryption path via the function
fscrypt_fname_disk_to_usr. But sg_init_one assumes the address is not
from highmem, and then cause panic since it doesn't call kmap_high but
kunmap_high is triggered at the end. To fix this problem in a simple
way, this patch avoids to put dentry page in pagecache into highmem.

Signed-off-by: Yunlong Song 
Reviewed-by: Chao Yu 
[Jaegeuk Kim: fix coding style]
Signed-off-by: Jaegeuk Kim

f2fs: support inode creation time

2018-01-25T22:10:39+00:00

This patch adds creation time field in inode layout to support showing
kstat.btime in ->statx.

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

f2fs: allow to recover node blocks given updated checkpoint

2018-01-22T22:56:59+00:00

If fsck.f2fs changes crc, we have no way to recover some inode blocks by roll-
forward recovery. Let's relax the condition to recover them.

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

f2fs: add an ioctl to disable GC for specific file

2018-01-22T22:56:35+00:00

This patch gives a flag to disable GC on given file, which would be useful, when
user wants to keep its block map. It also conducts in-place-update for dontmove
file.

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

f2fs: support quota sys files

2017-11-06T00:42:02+00:00

This patch supports hidden quota files in the system, which will be used for
Android. It requires up-to-date f2fs-tools later than v1.9.0.

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