xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

f2fs: introduce mode=lfs mount option

Browse Source 
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 <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
2016-06-03 19:29:38 -07:00
parent aa98727329
commit 36abef4e79
9 changed files with 74 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
fs/f2fs/segment.h
View File

@@ -470,6 +470,10 @@ static inline bool need_SSR(struct f2fs_sb_info *sbi)
{
int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES);
int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS);
if (test_opt(sbi, LFS))
return false;
return free_sections(sbi) <= (node_secs + 2 * dent_secs +
reserved_sections(sbi) + 1);
}
@@ -533,6 +537,9 @@ static inline bool need_inplace_update(struct inode *inode)
if (S_ISDIR(inode->i_mode) || f2fs_is_atomic_file(inode))
return false;
if (test_opt(sbi, LFS))
return false;
if (policy & (0x1 << F2FS_IPU_FORCE))
return true;
if (policy & (0x1 << F2FS_IPU_SSR) && need_SSR(sbi))