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ext2: add ->sync_fs

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Add a ->sync_fs method for data integrity syncs, and reimplement
->write_super ontop of it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig 2009-06-08 10:04:17 +02:00 committed by Al Viro
parent 80e09fb942
commit 40f31dd47e
1 changed files with 27 additions and 14 deletions
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41
fs/ext2/super.c
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@ -42,6 +42,7 @@ static void ext2_sync_super(struct super_block *sb,
struct ext2_super_block *es);
static int ext2_remount (struct super_block * sb, int * flags, char * data);
static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf);
static int ext2_sync_fs(struct super_block *sb, int wait);
void ext2_error (struct super_block * sb, const char * function,
const char * fmt, ...)
@ -309,6 +310,7 @@ static const struct super_operations ext2_sops = {
.delete_inode = ext2_delete_inode,
.put_super = ext2_put_super,
.write_super = ext2_write_super,
.sync_fs = ext2_sync_fs,
.statfs = ext2_statfs,
.remount_fs = ext2_remount,
.clear_inode = ext2_clear_inode,
@ -1132,25 +1134,36 @@ static void ext2_sync_super(struct super_block *sb, struct ext2_super_block *es)
* set s_state to EXT2_VALID_FS after some corrections.
*/
void ext2_write_super (struct super_block * sb)
static int ext2_sync_fs(struct super_block *sb, int wait)
{
struct ext2_super_block * es;
lock_kernel();
if (!(sb->s_flags & MS_RDONLY)) {
es = EXT2_SB(sb)->s_es;
struct ext2_super_block *es = EXT2_SB(sb)->s_es;
if (es->s_state & cpu_to_le16(EXT2_VALID_FS)) {
ext2_debug ("setting valid to 0\n");
es->s_state &= cpu_to_le16(~EXT2_VALID_FS);
es->s_free_blocks_count = cpu_to_le32(ext2_count_free_blocks(sb));
es->s_free_inodes_count = cpu_to_le32(ext2_count_free_inodes(sb));
es->s_mtime = cpu_to_le32(get_seconds());
ext2_sync_super(sb, es);
} else
ext2_commit_super (sb, es);
lock_kernel();
if (es->s_state & cpu_to_le16(EXT2_VALID_FS)) {
ext2_debug("setting valid to 0\n");
es->s_state &= cpu_to_le16(~EXT2_VALID_FS);
es->s_free_blocks_count =
cpu_to_le32(ext2_count_free_blocks(sb));
es->s_free_inodes_count =
cpu_to_le32(ext2_count_free_inodes(sb));
es->s_mtime = cpu_to_le32(get_seconds());
ext2_sync_super(sb, es);
} else {
ext2_commit_super(sb, es);
}
sb->s_dirt = 0;
unlock_kernel();
return 0;
}
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)