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exofs: statfs blocks is sectors not FS blocks

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Even though exofs has a 4k block size, statfs blocks
is in sectors (512 bytes).

Also if target returns 0 for capacity then make it
ULLONG_MAX. df does not like zero-size filesystems

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
This commit is contained in:
Boaz Harrosh 2009-11-02 18:19:24 +02:00
parent 19fe294f2e
commit cae012d853
1 changed files with 6 additions and 4 deletions
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10
fs/exofs/super.c
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@ -473,9 +473,11 @@ static int exofs_statfs(struct dentry *dentry, struct kstatfs *buf)
goto out; goto out;
ret = extract_attr_from_req(or, &attrs[0]); ret = extract_attr_from_req(or, &attrs[0]);
if (likely(!ret)) if (likely(!ret)) {
capacity = get_unaligned_be64(attrs[0].val_ptr); capacity = get_unaligned_be64(attrs[0].val_ptr);
else if (unlikely(!capacity))
capacity = ULLONG_MAX;
} else
EXOFS_DBGMSG("exofs_statfs: get capacity failed.\n"); EXOFS_DBGMSG("exofs_statfs: get capacity failed.\n");
ret = extract_attr_from_req(or, &attrs[1]); ret = extract_attr_from_req(or, &attrs[1]);
@ -487,8 +489,8 @@ static int exofs_statfs(struct dentry *dentry, struct kstatfs *buf)
/* fill in the stats buffer */ /* fill in the stats buffer */
buf->f_type = EXOFS_SUPER_MAGIC; buf->f_type = EXOFS_SUPER_MAGIC;
buf->f_bsize = EXOFS_BLKSIZE; buf->f_bsize = EXOFS_BLKSIZE;
buf->f_blocks = (capacity >> EXOFS_BLKSHIFT); buf->f_blocks = capacity >> 9;
buf->f_bfree = ((capacity - used) >> EXOFS_BLKSHIFT); buf->f_bfree = (capacity - used) >> 9;
buf->f_bavail = buf->f_bfree; buf->f_bavail = buf->f_bfree;
buf->f_files = sbi->s_numfiles; buf->f_files = sbi->s_numfiles;
buf->f_ffree = EXOFS_MAX_ID - sbi->s_numfiles; buf->f_ffree = EXOFS_MAX_ID - sbi->s_numfiles;