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xfs: return a void pointer from xfs_buf_offset

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This avoids all kinds of unessecary casts in an envrionment like Linux where
we can assume that pointer arithmetics are support on void pointers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Christoph Hellwig 2015-06-22 09:44:29 +10:00 committed by Dave Chinner
parent fc51c2b5f8
commit 88ee2df7f2
6 changed files with 13 additions and 17 deletions
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3
fs/xfs/libxfs/xfs_ialloc.h
View file

@ -44,8 +44,7 @@ xfs_icluster_size_fsb(
static inline struct xfs_dinode *
xfs_make_iptr(struct xfs_mount *mp, struct xfs_buf *b, int o)
{
return (struct xfs_dinode *)
(xfs_buf_offset(b, o << (mp)->m_sb.sb_inodelog));
return xfs_buf_offset(b, o << (mp)->m_sb.sb_inodelog);
}
/*

8
fs/xfs/libxfs/xfs_inode_buf.c
View file

@ -46,8 +46,7 @@ xfs_inobp_check(
j = mp->m_inode_cluster_size >> mp->m_sb.sb_inodelog;
for (i = 0; i < j; i++) {
dip = (xfs_dinode_t *)xfs_buf_offset(bp,
i * mp->m_sb.sb_inodesize);
dip = xfs_buf_offset(bp, i * mp->m_sb.sb_inodesize);
if (!dip->di_next_unlinked) {
xfs_alert(mp,
"Detected bogus zero next_unlinked field in inode %d buffer 0x%llx.",
@ -86,8 +85,7 @@ xfs_inode_buf_verify(
int di_ok;
xfs_dinode_t *dip;
dip = (struct xfs_dinode *)xfs_buf_offset(bp,
(i << mp->m_sb.sb_inodelog));
dip = xfs_buf_offset(bp, (i << mp->m_sb.sb_inodelog));
di_ok = dip->di_magic == cpu_to_be16(XFS_DINODE_MAGIC) &&
XFS_DINODE_GOOD_VERSION(dip->di_version);
if (unlikely(XFS_TEST_ERROR(!di_ok, mp,
@ -186,7 +184,7 @@ xfs_imap_to_bp(
}
*bpp = bp;
*dipp = (struct xfs_dinode *)xfs_buf_offset(bp, imap->im_boffset);
*dipp = xfs_buf_offset(bp, imap->im_boffset);
return 0;
}

6
fs/xfs/xfs_buf.c
View file

@ -1419,9 +1419,9 @@ xfs_buf_submit_wait(
return error;
}
xfs_caddr_t
void *
xfs_buf_offset(
xfs_buf_t *bp,
struct xfs_buf *bp,
size_t offset)
{
struct page *page;
@ -1431,7 +1431,7 @@ xfs_buf_offset(
offset += bp->b_offset;
page = bp->b_pages[offset >> PAGE_SHIFT];
return (xfs_caddr_t)page_address(page) + (offset & (PAGE_SIZE-1));
return page_address(page) + (offset & (PAGE_SIZE-1));
}
/*

2
fs/xfs/xfs_buf.h
View file

@ -299,7 +299,7 @@ extern void xfs_buf_iomove(xfs_buf_t *, size_t, size_t, void *,
xfs_buf_iomove((bp), (off), (len), NULL, XBRW_ZERO)
/* Buffer Utility Routines */
extern xfs_caddr_t xfs_buf_offset(xfs_buf_t *, size_t);
extern void *xfs_buf_offset(struct xfs_buf *, size_t);
/* Delayed Write Buffer Routines */
extern bool xfs_buf_delwri_queue(struct xfs_buf *, struct list_head *);

2
fs/xfs/xfs_inode.c
View file

@ -3464,7 +3464,7 @@ xfs_iflush_int(
ASSERT(ip->i_d.di_version > 1);
/* set *dip = inode's place in the buffer */
dip = (xfs_dinode_t *)xfs_buf_offset(bp, ip->i_imap.im_boffset);
dip = xfs_buf_offset(bp, ip->i_imap.im_boffset);
if (XFS_TEST_ERROR(dip->di_magic != cpu_to_be16(XFS_DINODE_MAGIC),
mp, XFS_ERRTAG_IFLUSH_1, XFS_RANDOM_IFLUSH_1)) {

9
fs/xfs/xfs_log_recover.c
View file

@ -1789,8 +1789,7 @@ xlog_recover_do_inode_buffer(
return -EFSCORRUPTED;
}
buffer_nextp = (xfs_agino_t *)xfs_buf_offset(bp,
next_unlinked_offset);
buffer_nextp = xfs_buf_offset(bp, next_unlinked_offset);
*buffer_nextp = *logged_nextp;
/*
@ -1798,7 +1797,7 @@ xlog_recover_do_inode_buffer(
* have to leave the inode in a consistent state for whoever
* reads it next....
*/
xfs_dinode_calc_crc(mp, (struct xfs_dinode *)
xfs_dinode_calc_crc(mp,
xfs_buf_offset(bp, i * mp->m_sb.sb_inodesize));
}
@ -2546,7 +2545,7 @@ xlog_recover_inode_pass2(
goto out_release;
}
ASSERT(in_f->ilf_fields & XFS_ILOG_CORE);
dip = (xfs_dinode_t *)xfs_buf_offset(bp, in_f->ilf_boffset);
dip = xfs_buf_offset(bp, in_f->ilf_boffset);
/*
* Make sure the place we're flushing out to really looks
@ -2885,7 +2884,7 @@ xlog_recover_dquot_pass2(
return error;
ASSERT(bp);
ddq = (xfs_disk_dquot_t *)xfs_buf_offset(bp, dq_f->qlf_boffset);
ddq = xfs_buf_offset(bp, dq_f->qlf_boffset);
/*
* If the dquot has an LSN in it, recover the dquot only if it's less