2009-01-19 17:28:35

by Coly Li

Subject: [PATCH 6/20] fs/fat: return f_fsid for statfs(2)

This patch makes fat return f_fsid info for statfs(2).

Signed-off-by: Coly Li <[email protected]>
Cc: OGAWA Hirofumi <[email protected]>
---
fs/fat/inode.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 6b74d09..c093b7f 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;
--
Coly Li
SuSE Labs

2009-01-19 19:40:26

by OGAWA Hirofumi

Subject: Re: [PATCH 6/20] fs/fat: return f_fsid for statfs(2)

Coly Li <[email protected]> writes:

> This patch makes fat return f_fsid info for statfs(2).

Looks good to me.

Acked-by: OGAWA Hirofumi <[email protected]>

Thanks.

> Signed-off-by: Coly Li <[email protected]>
> Cc: OGAWA Hirofumi <[email protected]>
> ---
> fs/fat/inode.c | 6 +++++-
> 1 files changed, 5 insertions(+), 1 deletions(-)
>
> diff --git a/fs/fat/inode.c b/fs/fat/inode.c
> index 6b74d09..c093b7f 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;

--
OGAWA Hirofumi <[email protected]>