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| author | Daniel Rosenberg <drosen@google.com> | 2018-08-21 05:21:43 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-10-16 19:36:39 +0300 |
| commit | 4354994f097d068a894aa1a0860da54571df3582 (patch) | |
| tree | bfa7fb1e09a2caa88aa2cdcf129834537a4c6a40 /fs/f2fs/debug.c | |
| parent | fb7d70db305a1446864227abf711b756568f8242 (diff) | |
| download | linux-4354994f097d068a894aa1a0860da54571df3582.tar.xz | |
f2fs: checkpoint disabling
Note that, it requires "f2fs: return correct errno in f2fs_gc".
This adds a lightweight non-persistent snapshotting scheme to f2fs.
To use, mount with the option checkpoint=disable, and to return to
normal operation, remount with checkpoint=enable. If the filesystem
is shut down before remounting with checkpoint=enable, it will revert
back to its apparent state when it was first mounted with
checkpoint=disable. This is useful for situations where you wish to be
able to roll back the state of the disk in case of some critical
failure.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
[Jaegeuk Kim: use SB_RDONLY instead of MS_RDONLY]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/debug.c')
| -rw-r--r-- | fs/f2fs/debug.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c index 75bc62edc4c1..026e10f30889 100644 --- a/fs/f2fs/debug.c +++ b/fs/f2fs/debug.c @@ -272,7 +272,8 @@ static int stat_show(struct seq_file *s, void *v) seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n", si->sbi->sb->s_bdev, i++, f2fs_readonly(si->sbi->sb) ? "RO": "RW", - f2fs_cp_error(si->sbi) ? "Error": "Good"); + is_set_ckpt_flags(si->sbi, CP_DISABLED_FLAG) ? + "Disabled": (f2fs_cp_error(si->sbi) ? "Error": "Good")); seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ", si->sit_area_segs, si->nat_area_segs); seq_printf(s, "[SSA: %d] [MAIN: %d", |