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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-09-20 18:19:06 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-10-23 09:24:39 +0900
commit5beb6e0b2008386571fd342d0a4a14f5c8c0baf8 (patch)
treeb5b86e48c3fe5041ce495ca9bee2e5f93f788293 /fs/nilfs2/segment.c
parentc05dbfc2609993ccc067879579e2a7726e12b3f1 (diff)
downloadlinux-stericsson-5beb6e0b2008386571fd342d0a4a14f5c8c0baf8.tar.gz
nilfs2: add bdev freeze/thaw support
Nilfs hasn't supported the freeze/thaw feature because it didn't work due to the peculiar design that multiple super block instances could be allocated for a device. This limitation was removed by the patch "nilfs2: do not allocate multiple super block instances for a device". So now this adds the freeze/thaw support to nilfs. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/segment.c')
-rw-r--r--fs/nilfs2/segment.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index 56350bf1f79f..172ad4257494 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -191,6 +191,8 @@ int nilfs_transaction_begin(struct super_block *sb,
if (ret > 0)
return 0;
+ vfs_check_frozen(sb, SB_FREEZE_WRITE);
+
sbi = NILFS_SB(sb);
nilfs = sbi->s_nilfs;
down_read(&nilfs->ns_segctor_sem);