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authorJan Kara <jack@suse.cz>2012-03-31 14:22:10 +0200
committerJan Kara <jack@suse.cz>2012-04-11 11:12:45 +0200
commitb838ec2232b764a4903707e212c62f681b32cd51 (patch)
tree31967c9821f019d97fdb6882a0b31d41db3d10e5 /fs/ext2
parentf2b2242081314ee4385f3b49d92b0adff8324d80 (diff)
downloadlinux-b838ec2232b764a4903707e212c62f681b32cd51.tar.gz
ext2: Remove s_dirt handling
Places which modify superblock feature / state fields mark the superblock buffer dirty so it is written out by flusher thread. Thus there's no need to set s_dirt there. The only other fields changing in the superblock are the numbers of free blocks, free inodes and s_wtime. There's no real need to write (or even compute) these periodically. Free blocks / inodes counters are recomputed on every mount from group counters anyway and value of s_wtime is only informational and imprecise anyway. So it should be enough to write these opportunistically on mount, remount, umount, and sync_fs times. Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext2')
-rw-r--r--fs/ext2/balloc.c2
-rw-r--r--fs/ext2/ialloc.c2
-rw-r--r--fs/ext2/super.c3
-rw-r--r--fs/ext2/xattr.c1
4 files changed, 0 insertions, 8 deletions
diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c
index a8cbe1bc6ad..a9bba1e3920 100644
--- a/fs/ext2/balloc.c
+++ b/fs/ext2/balloc.c
@@ -165,7 +165,6 @@ static void release_blocks(struct super_block *sb, int count)
struct ext2_sb_info *sbi = EXT2_SB(sb);
percpu_counter_add(&sbi->s_freeblocks_counter, count);
- sb->s_dirt = 1;
}
}
@@ -180,7 +179,6 @@ static void group_adjust_blocks(struct super_block *sb, int group_no,
free_blocks = le16_to_cpu(desc->bg_free_blocks_count);
desc->bg_free_blocks_count = cpu_to_le16(free_blocks + count);
spin_unlock(sb_bgl_lock(sbi, group_no));
- sb->s_dirt = 1;
mark_buffer_dirty(bh);
}
}
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index 8b15cf8cef3..c13eb7b91a1 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -81,7 +81,6 @@ static void ext2_release_inode(struct super_block *sb, int group, int dir)
spin_unlock(sb_bgl_lock(EXT2_SB(sb), group));
if (dir)
percpu_counter_dec(&EXT2_SB(sb)->s_dirs_counter);
- sb->s_dirt = 1;
mark_buffer_dirty(bh);
}
@@ -543,7 +542,6 @@ got:
}
spin_unlock(sb_bgl_lock(sbi, group));
- sb->s_dirt = 1;
mark_buffer_dirty(bh2);
if (test_opt(sb, GRPID)) {
inode->i_mode = mode;
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 12a7916cfa9..a43f9adcc81 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -1158,7 +1158,6 @@ static void ext2_sync_super(struct super_block *sb, struct ext2_super_block *es,
mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
if (wait)
sync_dirty_buffer(EXT2_SB(sb)->s_sbh);
- sb->s_dirt = 0;
}
/*
@@ -1191,8 +1190,6 @@ void ext2_write_super(struct super_block *sb)
{
if (!(sb->s_flags & MS_RDONLY))
ext2_sync_fs(sb, 1);
- else
- sb->s_dirt = 0;
}
static int ext2_remount (struct super_block * sb, int * flags, char * data)
diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index 6dcafc7efdf..b6754dbbce3 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -339,7 +339,6 @@ static void ext2_xattr_update_super_block(struct super_block *sb)
spin_lock(&EXT2_SB(sb)->s_lock);
EXT2_SET_COMPAT_FEATURE(sb, EXT2_FEATURE_COMPAT_EXT_ATTR);
spin_unlock(&EXT2_SB(sb)->s_lock);
- sb->s_dirt = 1;
mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
}