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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-08-20 20:10:38 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-10-23 09:24:33 +0900
commit6c43f41000312fefa482c3bfdd97e7f81d6be0ec (patch)
treede22a81c028f33d9fc2354bfdc218191b96240cf /fs/nilfs2/segment.h
parent7d6cd92fe2de3c286b8e95f43223f09db9302635 (diff)
downloadblackbird-op-linux-6c43f41000312fefa482c3bfdd97e7f81d6be0ec.tar.gz
blackbird-op-linux-6c43f41000312fefa482c3bfdd97e7f81d6be0ec.zip
nilfs2: keep zero value in i_cno except for gc-inodes
On-memory inode structures of nilfs have a member "i_cno" which stores a checkpoint number related to the inode. For gc-inodes, this field indicates version of data each gc-inode caches for GC. Log writer temporarily uses "i_cno" to transfer the latest checkpoint number. This stops the latter use and lets only gc-inodes use it. The purpose of this patch is to allow the successive change use "i_cno" for inode lookup. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/segment.h')
-rw-r--r--fs/nilfs2/segment.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/nilfs2/segment.h b/fs/nilfs2/segment.h
index 17c487bd8152..675d932148a4 100644
--- a/fs/nilfs2/segment.h
+++ b/fs/nilfs2/segment.h
@@ -107,6 +107,7 @@ struct nilfs_segsum_pointer {
* @sc_datablk_cnt: Data block count of a file
* @sc_nblk_this_inc: Number of blocks included in the current logical segment
* @sc_seg_ctime: Creation time
+ * @sc_cno: checkpoint number of current log
* @sc_flags: Internal flags
* @sc_state_lock: spinlock for sc_state and so on
* @sc_state: Segctord state flags
@@ -156,7 +157,7 @@ struct nilfs_sc_info {
unsigned long sc_datablk_cnt;
unsigned long sc_nblk_this_inc;
time_t sc_seg_ctime;
-
+ __u64 sc_cno;
unsigned long sc_flags;
spinlock_t sc_state_lock;
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