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author | Christoph Hellwig <hch@lst.de> | 2008-11-28 14:23:41 +1100 |
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committer | Niv Sardi <xaiki@sgi.com> | 2008-12-01 11:38:03 +1100 |
commit | 94e1b69d1abd108d306e926c3012ec89e481c0da (patch) | |
tree | d7fb02a0c855729831dcddbef6afcb518d3ed870 /fs/xfs/xfs_inode.c | |
parent | a1941895034cda2bffa23ba845607c82138ccf52 (diff) | |
download | kernel_samsung_tuna-94e1b69d1abd108d306e926c3012ec89e481c0da.zip kernel_samsung_tuna-94e1b69d1abd108d306e926c3012ec89e481c0da.tar.gz kernel_samsung_tuna-94e1b69d1abd108d306e926c3012ec89e481c0da.tar.bz2 |
[XFS] merge xfs_imap into xfs_dilocate
xfs_imap is the only caller of xfs_dilocate and doesn't add any significant
value. Merge the two functions and document the various cases we have for
inode cluster lookup in the new xfs_imap.
Also remove the unused im_agblkno and im_ioffset fields from struct xfs_imap
while we're at it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Niv Sardi <xaiki@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_inode.c')
-rw-r--r-- | fs/xfs/xfs_inode.c | 60 |
1 files changed, 1 insertions, 59 deletions
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 663ff9e..bf528b7 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -266,7 +266,7 @@ xfs_inotobp( * in once, thus we can use the mapping information stored in the inode * rather than calling xfs_imap(). This allows us to avoid the overhead * of looking at the inode btree for small block file systems - * (see xfs_dilocate()). + * (see xfs_imap()). */ int xfs_itobp( @@ -2508,64 +2508,6 @@ xfs_idata_realloc( ASSERT(ifp->if_bytes <= XFS_IFORK_SIZE(ip, whichfork)); } - - - -/* - * Map inode to disk block and offset. - * - * mp -- the mount point structure for the current file system - * tp -- the current transaction - * ino -- the inode number of the inode to be located - * imap -- this structure is filled in with the information necessary - * to retrieve the given inode from disk - * flags -- flags to pass to xfs_dilocate indicating whether or not - * lookups in the inode btree were OK or not - */ -int -xfs_imap( - xfs_mount_t *mp, - xfs_trans_t *tp, - xfs_ino_t ino, - xfs_imap_t *imap, - uint flags) -{ - xfs_fsblock_t fsbno; - int len; - int off; - int error; - - fsbno = imap->im_blkno ? - XFS_DADDR_TO_FSB(mp, imap->im_blkno) : NULLFSBLOCK; - error = xfs_dilocate(mp, tp, ino, &fsbno, &len, &off, flags); - if (error) - return error; - - imap->im_blkno = XFS_FSB_TO_DADDR(mp, fsbno); - imap->im_len = XFS_FSB_TO_BB(mp, len); - imap->im_agblkno = XFS_FSB_TO_AGBNO(mp, fsbno); - imap->im_ioffset = (ushort)off; - imap->im_boffset = (ushort)(off << mp->m_sb.sb_inodelog); - - /* - * If the inode number maps to a block outside the bounds - * of the file system then return NULL rather than calling - * read_buf and panicing when we get an error from the - * driver. - */ - if ((imap->im_blkno + imap->im_len) > - XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks)) { - xfs_fs_cmn_err(CE_ALERT, mp, "xfs_imap: " - "(imap->im_blkno (0x%llx) + imap->im_len (0x%llx)) > " - " XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks) (0x%llx)", - (unsigned long long) imap->im_blkno, - (unsigned long long) imap->im_len, - XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks)); - return EINVAL; - } - return 0; -} - void xfs_idestroy_fork( xfs_inode_t *ip, |