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sysv: 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 10:07:45 +02:00 committed by Al Viro
parent 7fbc6df0e7
commit ad43ffdeea
1 changed files with 13 additions and 6 deletions
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19
fs/sysv/inode.c
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@ -31,16 +31,13 @@
#include <asm/byteorder.h> #include <asm/byteorder.h>
#include "sysv.h" #include "sysv.h"
/* This is only called on sync() and umount(), when s_dirt=1. */ static int sysv_sync_fs(struct super_block *sb, int wait)
static void sysv_write_super(struct super_block *sb)
{ {
struct sysv_sb_info *sbi = SYSV_SB(sb); struct sysv_sb_info *sbi = SYSV_SB(sb);
unsigned long time = get_seconds(), old_time; unsigned long time = get_seconds(), old_time;
lock_super(sb); lock_super(sb);
lock_kernel(); lock_kernel();
if (sb->s_flags & MS_RDONLY)
goto clean;
/* /*
* If we are going to write out the super block, * If we are going to write out the super block,
@ -54,10 +51,19 @@ static void sysv_write_super(struct super_block *sb)
*sbi->s_sb_time = cpu_to_fs32(sbi, time); *sbi->s_sb_time = cpu_to_fs32(sbi, time);
mark_buffer_dirty(sbi->s_bh2); mark_buffer_dirty(sbi->s_bh2);
} }
clean:
sb->s_dirt = 0;
unlock_kernel(); unlock_kernel();
unlock_super(sb); unlock_super(sb);
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) static int sysv_remount(struct super_block *sb, int *flags, char *data)
@ -345,6 +351,7 @@ const struct super_operations sysv_sops = {
.delete_inode = sysv_delete_inode, .delete_inode = sysv_delete_inode,
.put_super = sysv_put_super, .put_super = sysv_put_super,
.write_super = sysv_write_super, .write_super = sysv_write_super,
.sync_fs = sysv_sync_fs,
.remount_fs = sysv_remount, .remount_fs = sysv_remount,
.statfs = sysv_statfs, .statfs = sysv_statfs,
}; };