path: root/fs
diff options
authorArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2012-07-03 16:43:28 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2012-07-22 23:58:12 +0400
commit9d46be294d12871adf4206f89168b14d27adb8b5 (patch)
tree6851c9f7d278bcf8a7cf01ac65f670dbb3aa95bf /fs
parenteee458936b52bd3a9ff0ff577313b637905fff08 (diff)
fs/sysv: stop using write_super and s_dirt
It does not look like sysv FS needs 'write_super()' at all, because all it does is a timestamp update. I cannot test this patch, because this file-system is so old and probably has not been used by anyone for years, so there are no tools to create it in Linux. But from the code I see that marking the superblock as dirty is basically marking the superblock buffers as drity and then setting the s_dirt flag. And when 'write_super()' is executed to handle the s_dirt flag, we just update the timestamp and again mark the superblock buffer as dirty. Seems pointless. It looks like we can update the timestamp more opprtunistically - on unmount or remount of sync, and nothing should change. Thus, this patch removes 'sysv_write_super()' and 's_dirt'. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
2 files changed, 0 insertions, 11 deletions
diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c
index f20ffe32b398..80e1e2b18df1 100644
--- a/fs/sysv/inode.c
+++ b/fs/sysv/inode.c
@@ -43,7 +43,6 @@ static int sysv_sync_fs(struct super_block *sb, int wait)
* then attach current time stamp.
* But if the filesystem was marked clean, keep it clean.
- sb->s_dirt = 0;
old_time = fs32_to_cpu(sbi, *sbi->s_sb_time);
if (sbi->s_type == FSTYPE_SYSV4) {
if (*sbi->s_sb_state == cpu_to_fs32(sbi, 0x7c269d38 - old_time))
@@ -57,14 +56,6 @@ static int sysv_sync_fs(struct super_block *sb, int wait)
return 0;
-static void sysv_write_super(struct super_block *sb)
- if (!(sb->s_flags & MS_RDONLY))
- sysv_sync_fs(sb, 1);
- else
- sb->s_dirt = 0;
static int sysv_remount(struct super_block *sb, int *flags, char *data)
struct sysv_sb_info *sbi = SYSV_SB(sb);
@@ -351,7 +342,6 @@ const struct super_operations sysv_sops = {
.write_inode = sysv_write_inode,
.evict_inode = sysv_evict_inode,
.put_super = sysv_put_super,
- .write_super = sysv_write_super,
.sync_fs = sysv_sync_fs,
.remount_fs = sysv_remount,
.statfs = sysv_statfs,
diff --git a/fs/sysv/sysv.h b/fs/sysv/sysv.h
index 11b07672f6c5..0bc35fdc58e2 100644
--- a/fs/sysv/sysv.h
+++ b/fs/sysv/sysv.h
@@ -117,7 +117,6 @@ static inline void dirty_sb(struct super_block *sb)
if (sbi->s_bh1 != sbi->s_bh2)
- sb->s_dirt = 1;