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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-06-03 19:29:38 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-06-13 11:55:21 -0700 |
| commit | 36abef4e796d382e81a0c2d21ea5327481dd7154 (patch) | |
| tree | 64ddad32e0f684ef7a5b5d734bbc7a4684c8bafa /fs/f2fs/segment.h | |
| parent | aa987273290d206b298e9d09db83e32ead661098 (diff) | |
| download | blackbird-op-linux-36abef4e796d382e81a0c2d21ea5327481dd7154.tar.gz blackbird-op-linux-36abef4e796d382e81a0c2d21ea5327481dd7154.zip | |
f2fs: introduce mode=lfs mount option
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>
Diffstat (limited to 'fs/f2fs/segment.h')
| -rw-r--r-- | fs/f2fs/segment.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index 890bb28d2082..d74cc330ae13 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -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)) |
