From aac49b7543c816a6e2c1581c5b5002e6a0cef3d1 Mon Sep 17 00:00:00 2001 From: Coly Li Date: Thu, 2 Apr 2009 16:59:35 -0700 Subject: [PATCH] fs/fat: return f_fsid for statfs(2) Make fat return f_fsid info for statfs(2). Signed-off-by: Coly Li Acked-by: OGAWA Hirofumi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/fat/inode.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/fs/fat/inode.c b/fs/fat/inode.c index de0004f..2cc952e 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -523,7 +523,9 @@ static int fat_remount(struct super_block *sb, int *flags, char *data) static int fat_statfs(struct dentry *dentry, struct kstatfs *buf) { - struct msdos_sb_info *sbi = MSDOS_SB(dentry->d_sb); + struct super_block *sb = dentry->d_sb; + struct msdos_sb_info *sbi = MSDOS_SB(sb); + u64 id = huge_encode_dev(sb->s_bdev->bd_dev); /* If the count of free cluster is still unknown, counts it here. */ if (sbi->free_clusters == -1 || !sbi->free_clus_valid) { @@ -537,6 +539,8 @@ static int fat_statfs(struct dentry *dentry, struct kstatfs *buf) buf->f_blocks = sbi->max_cluster - FAT_START_ENT; buf->f_bfree = sbi->free_clusters; buf->f_bavail = sbi->free_clusters; + buf->f_fsid.val[0] = (u32)id; + buf->f_fsid.val[1] = (u32)(id >> 32); buf->f_namelen = sbi->options.isvfat ? 260 : 12; return 0; -- 2.7.4