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xfs: remove xfs_bmapi_single()

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Now we have xfs_bmapi_read, there is no need for xfs_bmapi_single().
Change the remaining caller over and kill the function.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
This commit is contained in:
Dave Chinner 2011-09-18 20:40:46 +00:00 committed by Alex Elder
parent 5c8ed2021f
commit 5b777ad517
4 changed files with 19 additions and 112 deletions
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52
fs/xfs/xfs_bmap.c
View File

@ -4968,58 +4968,6 @@ error0:
return error;
}
/*
* Map file blocks to filesystem blocks, simple version.
* One block (extent) only, read-only.
* For flags, only the XFS_BMAPI_ATTRFORK flag is examined.
* For the other flag values, the effect is as if XFS_BMAPI_METADATA
* was set and all the others were clear.
*/
int /* error */
xfs_bmapi_single(
xfs_trans_t *tp, /* transaction pointer */
xfs_inode_t *ip, /* incore inode */
int whichfork, /* data or attr fork */
xfs_fsblock_t *fsb, /* output: mapped block */
xfs_fileoff_t bno) /* starting file offs. mapped */
{
int eof; /* we've hit the end of extents */
int error; /* error return */
xfs_bmbt_irec_t got; /* current file extent record */
xfs_ifork_t *ifp; /* inode fork pointer */
xfs_extnum_t lastx; /* last useful extent number */
xfs_bmbt_irec_t prev; /* previous file extent record */
ifp = XFS_IFORK_PTR(ip, whichfork);
if (unlikely(
XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE &&
XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS)) {
XFS_ERROR_REPORT("xfs_bmapi_single", XFS_ERRLEVEL_LOW,
ip->i_mount);
return XFS_ERROR(EFSCORRUPTED);
}
if (XFS_FORCED_SHUTDOWN(ip->i_mount))
return XFS_ERROR(EIO);
XFS_STATS_INC(xs_blk_mapr);
if (!(ifp->if_flags & XFS_IFEXTENTS) &&
(error = xfs_iread_extents(tp, ip, whichfork)))
return error;
(void)xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got,
&prev);
/*
* Reading past eof, act as though there's a hole
* up to end.
*/
if (eof || got.br_startoff > bno) {
*fsb = NULLFSBLOCK;
return 0;
}
ASSERT(!isnullstartblock(got.br_startblock));
ASSERT(bno < got.br_startoff + got.br_blockcount);
*fsb = got.br_startblock + (bno - got.br_startoff);
return 0;
}
/*
* Unmap (remove) blocks from a file.
* If nexts is nonzero then the number of extents to remove is limited to

15
fs/xfs/xfs_bmap.h
View File

@ -298,21 +298,6 @@ int xfs_bmapi_read(struct xfs_inode *ip, xfs_fileoff_t bno,
xfs_filblks_t len, struct xfs_bmbt_irec *mval,
int *nmap, int flags);
/*
* Map file blocks to filesystem blocks, simple version.
* One block only, read-only.
* For flags, only the XFS_BMAPI_ATTRFORK flag is examined.
* For the other flag values, the effect is as if XFS_BMAPI_METADATA
* was set and all the others were clear.
*/
int /* error */
xfs_bmapi_single(
struct xfs_trans *tp, /* transaction pointer */
struct xfs_inode *ip, /* incore inode */
int whichfork, /* data or attr fork */
xfs_fsblock_t *fsb, /* output: mapped block */
xfs_fileoff_t bno); /* starting file offs. mapped */
/*
* Unmap (remove) blocks from a file.
* If nexts is nonzero then the number of extents to remove is limited to

32
fs/xfs/xfs_da_btree.c
View File

@ -1975,32 +1975,16 @@ xfs_da_do_buf(
/*
* Optimize the one-block case.
*/
if (nfsb == 1) {
xfs_fsblock_t fsb;
if ((error =
xfs_bmapi_single(trans, dp, whichfork, &fsb,
(xfs_fileoff_t)bno))) {
return error;
}
if (nfsb == 1)
mapp = &map;
if (fsb == NULLFSBLOCK) {
nmap = 0;
} else {
map.br_startblock = fsb;
map.br_startoff = (xfs_fileoff_t)bno;
map.br_blockcount = 1;
nmap = 1;
}
} else {
else
mapp = kmem_alloc(sizeof(*mapp) * nfsb, KM_SLEEP);
nmap = nfsb;
error = xfs_bmapi_read(dp, (xfs_fileoff_t)bno, nfsb,
mapp, &nmap,
xfs_bmapi_aflag(whichfork));
if (error)
goto exit0;
}
nmap = nfsb;
error = xfs_bmapi_read(dp, (xfs_fileoff_t)bno, nfsb, mapp,
&nmap, xfs_bmapi_aflag(whichfork));
if (error)
goto exit0;
} else {
map.br_startblock = XFS_DADDR_TO_FSB(mp, mappedbno);
map.br_startoff = (xfs_fileoff_t)bno;

32
fs/xfs/xfs_rtalloc.c
View File

@ -856,33 +856,23 @@ xfs_rtbuf_get(
xfs_buf_t **bpp) /* output: buffer for the block */
{
xfs_buf_t *bp; /* block buffer, result */
xfs_daddr_t d; /* disk addr of block */
int error; /* error value */
xfs_fsblock_t fsb; /* fs block number for block */
xfs_inode_t *ip; /* bitmap or summary inode */
xfs_bmbt_irec_t map;
int nmap;
int error; /* error value */
ip = issum ? mp->m_rsumip : mp->m_rbmip;
/*
* Map from the file offset (block) and inode number to the
* file system block.
*/
error = xfs_bmapi_single(tp, ip, XFS_DATA_FORK, &fsb, block);
if (error) {
error = xfs_bmapi_read(ip, block, 1, &map, &nmap, XFS_DATA_FORK);
if (error)
return error;
}
ASSERT(fsb != NULLFSBLOCK);
/*
* Convert to disk address for buffer cache.
*/
d = XFS_FSB_TO_DADDR(mp, fsb);
/*
* Read the buffer.
*/
error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, d,
ASSERT(map.br_startblock != NULLFSBLOCK);
error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp,
XFS_FSB_TO_DADDR(mp, map.br_startblock),
mp->m_bsize, 0, &bp);
if (error) {
if (error)
return error;
}
ASSERT(!xfs_buf_geterror(bp));
*bpp = bp;
return 0;