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xfs: split xfs_imap_to_bp

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Split looking up the dinode from xfs_imap_to_bp, which can be
significantly simplified as a result.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
This commit is contained in:
Christoph Hellwig 2021-03-29 11:11:37 -07:00 • committed by Darrick J. Wong
parent e773f88029
commit af9dcddef6
7 changed files with 17 additions and 36 deletions
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27
fs/xfs/libxfs/xfs_inode_buf.c
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@ -124,37 +124,18 @@ const struct xfs_buf_ops xfs_inode_buf_ra_ops = {
/*
* This routine is called to map an inode to the buffer containing the on-disk
* version of the inode. It returns a pointer to the buffer containing the
* on-disk inode in the bpp parameter, and in the dipp parameter it returns a
* pointer to the on-disk inode within that buffer.
*
* If a non-zero error is returned, then the contents of bpp and dipp are
* undefined.
* on-disk inode in the bpp parameter.
*/
int
xfs_imap_to_bp(
struct xfs_mount *mp,
struct xfs_trans *tp,
struct xfs_imap *imap,
struct xfs_dinode **dipp,
struct xfs_buf **bpp,
uint buf_flags)
struct xfs_buf **bpp)
{
struct xfs_buf *bp;
int error;
buf_flags |= XBF_UNMAPPED;
error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, imap->im_blkno,
(int)imap->im_len, buf_flags, &bp,
return xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, imap->im_blkno,
imap->im_len, XBF_UNMAPPED, bpp,
&xfs_inode_buf_ops);
if (error) {
ASSERT(error != -EAGAIN || (buf_flags & XBF_TRYLOCK));
return error;
}
*bpp = bp;
if (dipp)
*dipp = xfs_buf_offset(bp, imap->im_boffset);
return 0;
}
static inline struct timespec64 xfs_inode_decode_bigtime(uint64_t ts)