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Re: [PATCH 1/2] kill unnessecary ioops indirection

To: Lachlan McIlroy <lachlan@xxxxxxx>
Subject: Re: [PATCH 1/2] kill unnessecary ioops indirection
From: Christoph Hellwig <hch@xxxxxx>
Date: Tue, 18 Sep 2007 21:23:27 +0200
Cc: Christoph Hellwig <hch@xxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <46EF661C.4030500@sgi.com>
References: <20070914162802.GE7110@lst.de> <46EF661C.4030500@sgi.com>
Sender: xfs-bounce@xxxxxxxxxxx
User-agent: Mutt/1.3.28i
> > STATIC int                          /* error (positive) */
> > xfs_zero_last_block(
> >-    struct inode    *ip,
> >-    xfs_iocore_t    *io,
> >+    struct inode    *inode,
> >+    xfs_inode_t     *ip,
> We don't really need to pass both the inode and xfs_inode
> since it's easy to get one from the other.  It was a trivial
> exercise to get the iocore from the inode too so it's not a
> problem with this change but should be cleaned up.

Yeah, and when doing this change a lot more similar cleanups to
get rid of xfs_inode and vnode fall out automatically.  I've
incorporated those bits into the next version.

> >@@ -474,7 +474,8 @@ xfs_zero_eof(
> >     xfs_off_t       offset,         /* starting I/O offset */
> >     xfs_fsize_t     isize)          /* current inode size */
> > {
> >-    struct inode    *ip = vn_to_inode(vp);
> >+    struct inode    *inode = vn_to_inode(vp);
> >+    xfs_inode_t     *ip = XFS_I(inode);
> Can we change the prototype for xfs_zero_eof() to take an inode
> instead of the vp?  They are the same object and vn_to_inode()/
> vn_from_inode() are just a waste of cycles.  Also kills another
> stack variable.

I've changed to to an xfs_inode because that's what we want.
inode is only needed all the way up in xfs_iozero once.

vn_to_inode()/vn_from_inode() are no-ops nowdays, btw.

> >-    error = XFS_SWAP_EXTENTS(mp, &ip->i_iocore, &tip->i_iocore, sxp);
> >+    error = xfs_swap_extents(ip, ip, sxp);
> 
> xfs_swap_extents(ip, tip, sxp);

Oops, fixed.  No idea why xfsqa didn't catch this.


And here's the updated patch:


Index: linux-2.6-xfs/fs/xfs/linux-2.6/xfs_lrw.c
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/linux-2.6/xfs_lrw.c       2007-09-16 
13:51:33.000000000 +0200
+++ linux-2.6-xfs/fs/xfs/linux-2.6/xfs_lrw.c    2007-09-18 16:44:27.000000000 
+0200
@@ -131,7 +131,7 @@ xfs_inval_cached_trace(
  */
 STATIC int
 xfs_iozero(
-       struct inode            *ip,    /* inode                        */
+       struct xfs_inode        *ip,    /* inode                        */
        loff_t                  pos,    /* offset in file               */
        size_t                  count)  /* size of data to zero         */
 {
@@ -140,7 +140,7 @@ xfs_iozero(
        struct address_space    *mapping;
        int                     status;
 
-       mapping = ip->i_mapping;
+       mapping = ip->i_vnode->i_mapping;
        do {
                unsigned long index, offset;
 
@@ -400,20 +400,19 @@ xfs_splice_write(
  */
 STATIC int                             /* error (positive) */
 xfs_zero_last_block(
-       struct inode    *ip,
-       xfs_iocore_t    *io,
+       xfs_inode_t     *ip,
        xfs_fsize_t     offset,
        xfs_fsize_t     isize)
 {
        xfs_fileoff_t   last_fsb;
-       xfs_mount_t     *mp = io->io_mount;
+       xfs_mount_t     *mp = ip->i_mount;
        int             nimaps;
        int             zero_offset;
        int             zero_len;
        int             error = 0;
        xfs_bmbt_irec_t imap;
 
-       ASSERT(ismrlocked(io->io_lock, MR_UPDATE) != 0);
+       ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE) != 0);
 
        zero_offset = XFS_B_FSB_OFFSET(mp, isize);
        if (zero_offset == 0) {
@@ -426,7 +425,7 @@ xfs_zero_last_block(
 
        last_fsb = XFS_B_TO_FSBT(mp, isize);
        nimaps = 1;
-       error = XFS_BMAPI(mp, NULL, io, last_fsb, 1, 0, NULL, 0, &imap,
+       error = xfs_bmapi(NULL, ip, last_fsb, 1, 0, NULL, 0, &imap,
                          &nimaps, NULL, NULL);
        if (error) {
                return error;
@@ -444,14 +443,14 @@ xfs_zero_last_block(
         * out sync.  We need to drop the ilock while we do this so we
         * don't deadlock when the buffer cache calls back to us.
         */
-       XFS_IUNLOCK(mp, io, XFS_ILOCK_EXCL| XFS_EXTSIZE_RD);
+       xfs_iunlock(ip, XFS_ILOCK_EXCL| XFS_EXTSIZE_RD);
 
        zero_len = mp->m_sb.sb_blocksize - zero_offset;
        if (isize + zero_len > offset)
                zero_len = offset - isize;
        error = xfs_iozero(ip, isize, zero_len);
 
-       XFS_ILOCK(mp, io, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
+       xfs_ilock(ip, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
        ASSERT(error >= 0);
        return error;
 }
@@ -469,12 +468,11 @@ xfs_zero_last_block(
 
 int                                    /* error (positive) */
 xfs_zero_eof(
-       bhv_vnode_t     *vp,
-       xfs_iocore_t    *io,
+       xfs_inode_t     *ip,
        xfs_off_t       offset,         /* starting I/O offset */
        xfs_fsize_t     isize)          /* current inode size */
 {
-       struct inode    *ip = vn_to_inode(vp);
+       xfs_iocore_t    *io = &ip->i_iocore;
        xfs_fileoff_t   start_zero_fsb;
        xfs_fileoff_t   end_zero_fsb;
        xfs_fileoff_t   zero_count_fsb;
@@ -494,7 +492,7 @@ xfs_zero_eof(
         * First handle zeroing the block on which isize resides.
         * We only zero a part of that block so it is handled specially.
         */
-       error = xfs_zero_last_block(ip, io, offset, isize);
+       error = xfs_zero_last_block(ip, offset, isize);
        if (error) {
                ASSERT(ismrlocked(io->io_lock, MR_UPDATE));
                ASSERT(ismrlocked(io->io_iolock, MR_UPDATE));
@@ -525,7 +523,7 @@ xfs_zero_eof(
        while (start_zero_fsb <= end_zero_fsb) {
                nimaps = 1;
                zero_count_fsb = end_zero_fsb - start_zero_fsb + 1;
-               error = XFS_BMAPI(mp, NULL, io, start_zero_fsb, zero_count_fsb,
+               error = xfs_bmapi(NULL, ip, start_zero_fsb, zero_count_fsb,
                                  0, NULL, 0, &imap, &nimaps, NULL, NULL);
                if (error) {
                        ASSERT(ismrlocked(io->io_lock, MR_UPDATE));
@@ -553,7 +551,7 @@ xfs_zero_eof(
                 * Drop the inode lock while we're doing the I/O.
                 * We'll still have the iolock to protect us.
                 */
-               XFS_IUNLOCK(mp, io, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
+               xfs_iunlock(ip, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
 
                zero_off = XFS_FSB_TO_B(mp, start_zero_fsb);
                zero_len = XFS_FSB_TO_B(mp, imap.br_blockcount);
@@ -569,14 +567,13 @@ xfs_zero_eof(
                start_zero_fsb = imap.br_startoff + imap.br_blockcount;
                ASSERT(start_zero_fsb <= (end_zero_fsb + 1));
 
-               XFS_ILOCK(mp, io, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
+               xfs_ilock(ip, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
        }
 
        return 0;
 
 out_lock:
-
-       XFS_ILOCK(mp, io, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
+       xfs_ilock(ip, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
        ASSERT(error >= 0);
        return error;
 }
@@ -717,7 +714,7 @@ start:
         */
 
        if (pos > xip->i_size) {
-               error = xfs_zero_eof(vp, io, pos, xip->i_size);
+               error = xfs_zero_eof(xip, pos, xip->i_size);
                if (error) {
                        xfs_iunlock(xip, XFS_ILOCK_EXCL);
                        goto out_unlock_internal;
@@ -762,7 +759,7 @@ retry:
 
                if (need_i_mutex) {
                        /* demote the lock now the cached pages are gone */
-                       XFS_ILOCK_DEMOTE(mp, io, XFS_IOLOCK_EXCL);
+                       xfs_ilock_demote(xip, XFS_IOLOCK_EXCL);
                        mutex_unlock(&inode->i_mutex);
 
                        iolock = XFS_IOLOCK_SHARED;
@@ -905,25 +902,6 @@ xfs_bdstrat_cb(struct xfs_buf *bp)
        }
 }
 
-
-int
-xfs_bmap(
-       xfs_inode_t     *ip,
-       xfs_off_t       offset,
-       ssize_t         count,
-       int             flags,
-       xfs_iomap_t     *iomapp,
-       int             *niomaps)
-{
-       xfs_iocore_t    *io = &ip->i_iocore;
-
-       ASSERT((ip->i_d.di_mode & S_IFMT) == S_IFREG);
-       ASSERT(((ip->i_d.di_flags & XFS_DIFLAG_REALTIME) != 0) ==
-              ((ip->i_iocore.io_flags & XFS_IOCORE_RT) != 0));
-
-       return xfs_iomap(io, offset, count, flags, iomapp, niomaps);
-}
-
 /*
  * Wrapper around bdstrat so that we can stop data
  * from going to disk in case we are shutting down the filesystem.
Index: linux-2.6-xfs/fs/xfs/xfs_iomap.c
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/xfs_iomap.c       2007-09-18 16:34:31.000000000 
+0200
+++ linux-2.6-xfs/fs/xfs/xfs_iomap.c    2007-09-18 16:37:22.000000000 +0200
@@ -53,11 +53,11 @@
 void
 xfs_iomap_enter_trace(
        int             tag,
-       xfs_iocore_t    *io,
+       xfs_inode_t     *ip,
        xfs_off_t       offset,
        ssize_t         count)
 {
-       xfs_inode_t     *ip = XFS_IO_INODE(io);
+       xfs_iocore_t    *io = &ip->i_iocore;
 
        if (!ip->i_rwtrace)
                return;
@@ -84,15 +84,13 @@ xfs_iomap_enter_trace(
 void
 xfs_iomap_map_trace(
        int             tag,
-       xfs_iocore_t    *io,
+       xfs_inode_t     *ip,
        xfs_off_t       offset,
        ssize_t         count,
        xfs_iomap_t     *iomapp,
        xfs_bmbt_irec_t *imapp,
        int             flags)
 {
-       xfs_inode_t     *ip = XFS_IO_INODE(io);
-
        if (!ip->i_rwtrace)
                return;
 
@@ -126,7 +124,7 @@ xfs_iomap_map_trace(
 
 STATIC int
 xfs_imap_to_bmap(
-       xfs_iocore_t    *io,
+       xfs_inode_t     *ip,
        xfs_off_t       offset,
        xfs_bmbt_irec_t *imap,
        xfs_iomap_t     *iomapp,
@@ -134,11 +132,10 @@ xfs_imap_to_bmap(
        int             iomaps,                 /* Number of iomap entries */
        int             flags)
 {
-       xfs_mount_t     *mp;
+       xfs_mount_t     *mp = ip->i_mount;
        int             pbm;
        xfs_fsblock_t   start_block;
 
-       mp = io->io_mount;
 
        for (pbm = 0; imaps && pbm < iomaps; imaps--, iomapp++, imap++, pbm++) {
                iomapp->iomap_offset = XFS_FSB_TO_B(mp, imap->br_startoff);
@@ -146,7 +143,7 @@ xfs_imap_to_bmap(
                iomapp->iomap_bsize = XFS_FSB_TO_B(mp, imap->br_blockcount);
                iomapp->iomap_flags = flags;
 
-               if (io->io_flags & XFS_IOCORE_RT) {
+               if (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) {
                        iomapp->iomap_flags |= IOMAP_REALTIME;
                        iomapp->iomap_target = mp->m_rtdev_targp;
                } else {
@@ -160,7 +157,7 @@ xfs_imap_to_bmap(
                        iomapp->iomap_bn = IOMAP_DADDR_NULL;
                        iomapp->iomap_flags |= IOMAP_DELAY;
                } else {
-                       iomapp->iomap_bn = XFS_FSB_TO_DB_IO(io, start_block);
+                       iomapp->iomap_bn = XFS_FSB_TO_DB(ip, start_block);
                        if (ISUNWRITTEN(imap))
                                iomapp->iomap_flags |= IOMAP_UNWRITTEN;
                }
@@ -172,14 +169,14 @@ xfs_imap_to_bmap(
 
 int
 xfs_iomap(
-       xfs_iocore_t    *io,
+       xfs_inode_t     *ip,
        xfs_off_t       offset,
        ssize_t         count,
        int             flags,
        xfs_iomap_t     *iomapp,
        int             *niomaps)
 {
-       xfs_mount_t     *mp = io->io_mount;
+       xfs_mount_t     *mp = ip->i_mount;
        xfs_fileoff_t   offset_fsb, end_fsb;
        int             error = 0;
        int             lockmode = 0;
@@ -188,32 +185,37 @@ xfs_iomap(
        int             bmapi_flags = 0;
        int             iomap_flags = 0;
 
+       ASSERT((ip->i_d.di_mode & S_IFMT) == S_IFREG);
+       ASSERT(((ip->i_d.di_flags & XFS_DIFLAG_REALTIME) != 0) ==
+              ((ip->i_iocore.io_flags & XFS_IOCORE_RT) != 0));
+
        if (XFS_FORCED_SHUTDOWN(mp))
                return XFS_ERROR(EIO);
 
        switch (flags & (BMAPI_READ | BMAPI_WRITE | BMAPI_ALLOCATE)) {
        case BMAPI_READ:
-               xfs_iomap_enter_trace(XFS_IOMAP_READ_ENTER, io, offset, count);
-               lockmode = XFS_LCK_MAP_SHARED(mp, io);
+               xfs_iomap_enter_trace(XFS_IOMAP_READ_ENTER, ip, offset, count);
+               lockmode = xfs_ilock_map_shared(ip);
                bmapi_flags = XFS_BMAPI_ENTIRE;
                break;
        case BMAPI_WRITE:
-               xfs_iomap_enter_trace(XFS_IOMAP_WRITE_ENTER, io, offset, count);
+               xfs_iomap_enter_trace(XFS_IOMAP_WRITE_ENTER, ip, offset, count);
                lockmode = XFS_ILOCK_EXCL|XFS_EXTSIZE_WR;
                if (flags & BMAPI_IGNSTATE)
                        bmapi_flags |= XFS_BMAPI_IGSTATE|XFS_BMAPI_ENTIRE;
-               XFS_ILOCK(mp, io, lockmode);
+               xfs_ilock(ip, lockmode);
                break;
        case BMAPI_ALLOCATE:
-               xfs_iomap_enter_trace(XFS_IOMAP_ALLOC_ENTER, io, offset, count);
+               xfs_iomap_enter_trace(XFS_IOMAP_ALLOC_ENTER, ip, offset, count);
                lockmode = XFS_ILOCK_SHARED|XFS_EXTSIZE_RD;
                bmapi_flags = XFS_BMAPI_ENTIRE;
+
                /* Attempt non-blocking lock */
                if (flags & BMAPI_TRYLOCK) {
-                       if (!XFS_ILOCK_NOWAIT(mp, io, lockmode))
+                       if (!xfs_ilock_nowait(ip, lockmode))
                                return XFS_ERROR(EAGAIN);
                } else {
-                       XFS_ILOCK(mp, io, lockmode);
+                       xfs_ilock(ip, lockmode);
                }
                break;
        default:
@@ -226,7 +228,7 @@ xfs_iomap(
        end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + count);
        offset_fsb = XFS_B_TO_FSBT(mp, offset);
 
-       error = XFS_BMAPI(mp, NULL, io, offset_fsb,
+       error = xfs_bmapi(NULL, ip, offset_fsb,
                        (xfs_filblks_t)(end_fsb - offset_fsb),
                        bmapi_flags,  NULL, 0, &imap,
                        &nimaps, NULL, NULL);
@@ -240,42 +242,42 @@ xfs_iomap(
                if (nimaps &&
                    (imap.br_startblock != HOLESTARTBLOCK) &&
                    (imap.br_startblock != DELAYSTARTBLOCK)) {
-                       xfs_iomap_map_trace(XFS_IOMAP_WRITE_MAP, io,
+                       xfs_iomap_map_trace(XFS_IOMAP_WRITE_MAP, ip,
                                        offset, count, iomapp, &imap, flags);
                        break;
                }
 
                if (flags & (BMAPI_DIRECT|BMAPI_MMAP)) {
-                       error = XFS_IOMAP_WRITE_DIRECT(mp, io, offset,
-                                       count, flags, &imap, &nimaps, nimaps);
+                       error = xfs_iomap_write_direct(ip, offset, count, flags,
+                                                      &imap, &nimaps, nimaps);
                } else {
-                       error = XFS_IOMAP_WRITE_DELAY(mp, io, offset, count,
-                                       flags, &imap, &nimaps);
+                       error = xfs_iomap_write_delay(ip, offset, count, flags,
+                                                     &imap, &nimaps);
                }
                if (!error) {
-                       xfs_iomap_map_trace(XFS_IOMAP_ALLOC_MAP, io,
+                       xfs_iomap_map_trace(XFS_IOMAP_ALLOC_MAP, ip,
                                        offset, count, iomapp, &imap, flags);
                }
                iomap_flags = IOMAP_NEW;
                break;
        case BMAPI_ALLOCATE:
                /* If we found an extent, return it */
-               XFS_IUNLOCK(mp, io, lockmode);
+               xfs_iunlock(ip, lockmode);
                lockmode = 0;
 
                if (nimaps && !ISNULLSTARTBLOCK(imap.br_startblock)) {
-                       xfs_iomap_map_trace(XFS_IOMAP_WRITE_MAP, io,
+                       xfs_iomap_map_trace(XFS_IOMAP_WRITE_MAP, ip,
                                        offset, count, iomapp, &imap, flags);
                        break;
                }
 
-               error = XFS_IOMAP_WRITE_ALLOCATE(mp, io, offset, count,
+               error = xfs_iomap_write_allocate(ip, offset, count,
                                                 &imap, &nimaps);
                break;
        }
 
        if (nimaps) {
-               *niomaps = xfs_imap_to_bmap(io, offset, &imap,
+               *niomaps = xfs_imap_to_bmap(ip, offset, &imap,
                                            iomapp, nimaps, *niomaps, 
iomap_flags);
        } else if (niomaps) {
                *niomaps = 0;
@@ -283,14 +285,15 @@ xfs_iomap(
 
 out:
        if (lockmode)
-               XFS_IUNLOCK(mp, io, lockmode);
+               xfs_iunlock(ip, lockmode);
        return XFS_ERROR(error);
 }
 
+
 STATIC int
 xfs_iomap_eof_align_last_fsb(
        xfs_mount_t     *mp,
-       xfs_iocore_t    *io,
+       xfs_inode_t     *ip,
        xfs_fsize_t     isize,
        xfs_extlen_t    extsize,
        xfs_fileoff_t   *last_fsb)
@@ -299,7 +302,7 @@ xfs_iomap_eof_align_last_fsb(
        xfs_extlen_t    align;
        int             eof, error;
 
-       if (io->io_flags & XFS_IOCORE_RT)
+       if (ip->i_d.di_flags & XFS_DIFLAG_REALTIME)
                ;
        /*
         * If mounted with the "-o swalloc" option, roundup the allocation
@@ -330,7 +333,7 @@ xfs_iomap_eof_align_last_fsb(
        }
 
        if (new_last_fsb) {
-               error = XFS_BMAP_EOF(mp, io, new_last_fsb, XFS_DATA_FORK, &eof);
+               error = xfs_bmap_eof(ip, new_last_fsb, XFS_DATA_FORK, &eof);
                if (error)
                        return error;
                if (eof)
@@ -435,7 +438,7 @@ xfs_iomap_write_direct(
        offset_fsb = XFS_B_TO_FSBT(mp, offset);
        last_fsb = XFS_B_TO_FSB(mp, ((xfs_ufsize_t)(offset + count)));
        if ((offset + count) > isize) {
-               error = xfs_iomap_eof_align_last_fsb(mp, io, isize, extsz,
+               error = xfs_iomap_eof_align_last_fsb(mp, ip, isize, extsz,
                                                        &last_fsb);
                if (error)
                        goto error_out;
@@ -502,7 +505,7 @@ xfs_iomap_write_direct(
         */
        XFS_BMAP_INIT(&free_list, &firstfsb);
        nimaps = 1;
-       error = XFS_BMAPI(mp, tp, io, offset_fsb, count_fsb, bmapi_flag,
+       error = xfs_bmapi(tp, ip, offset_fsb, count_fsb, bmapi_flag,
                &firstfsb, 0, &imap, &nimaps, &free_list, NULL);
        if (error)
                goto error0;
@@ -560,7 +563,7 @@ error_out:
 STATIC int
 xfs_iomap_eof_want_preallocate(
        xfs_mount_t     *mp,
-       xfs_iocore_t    *io,
+       xfs_inode_t     *ip,
        xfs_fsize_t     isize,
        xfs_off_t       offset,
        size_t          count,
@@ -587,7 +590,7 @@ xfs_iomap_eof_want_preallocate(
        while (count_fsb > 0) {
                imaps = nimaps;
                firstblock = NULLFSBLOCK;
-               error = XFS_BMAPI(mp, NULL, io, start_fsb, count_fsb, 0,
+               error = xfs_bmapi(NULL, ip, start_fsb, count_fsb, 0,
                                  &firstblock, 0, imap, &imaps, NULL, NULL);
                if (error)
                        return error;
@@ -644,7 +647,7 @@ retry:
        if (io->io_new_size > isize)
                isize = io->io_new_size;
 
-       error = xfs_iomap_eof_want_preallocate(mp, io, isize, offset, count,
+       error = xfs_iomap_eof_want_preallocate(mp, ip, isize, offset, count,
                                ioflag, imap, XFS_WRITE_IMAPS, &prealloc);
        if (error)
                return error;
@@ -658,7 +661,7 @@ retry:
        }
 
        if (prealloc || extsz) {
-               error = xfs_iomap_eof_align_last_fsb(mp, io, isize, extsz,
+               error = xfs_iomap_eof_align_last_fsb(mp, ip, isize, extsz,
                                                        &last_fsb);
                if (error)
                        return error;
@@ -666,7 +669,7 @@ retry:
 
        nimaps = XFS_WRITE_IMAPS;
        firstblock = NULLFSBLOCK;
-       error = XFS_BMAPI(mp, NULL, io, offset_fsb,
+       error = xfs_bmapi(NULL, ip, offset_fsb,
                          (xfs_filblks_t)(last_fsb - offset_fsb),
                          XFS_BMAPI_DELAY | XFS_BMAPI_WRITE |
                          XFS_BMAPI_ENTIRE, &firstblock, 1, imap,
@@ -680,7 +683,7 @@ retry:
         */
        if (nimaps == 0) {
                xfs_iomap_enter_trace(XFS_IOMAP_WRITE_NOSPACE,
-                                       io, offset, count);
+                                       ip, offset, count);
                if (xfs_flush_space(ip, &fsynced, &ioflag))
                        return XFS_ERROR(ENOSPC);
 
@@ -788,7 +791,7 @@ xfs_iomap_write_allocate(
                        }
 
                        /* Go get the actual blocks */
-                       error = XFS_BMAPI(mp, tp, io, map_start_fsb, count_fsb,
+                       error = xfs_bmapi(tp, ip, map_start_fsb, count_fsb,
                                        XFS_BMAPI_WRITE, &first_block, 1,
                                        imap, &nimaps, &free_list, NULL);
                        if (error)
@@ -860,8 +863,7 @@ xfs_iomap_write_unwritten(
        int             committed;
        int             error;
 
-       xfs_iomap_enter_trace(XFS_IOMAP_UNWRITTEN,
-                               &ip->i_iocore, offset, count);
+       xfs_iomap_enter_trace(XFS_IOMAP_UNWRITTEN, ip, offset, count);
 
        offset_fsb = XFS_B_TO_FSBT(mp, offset);
        count_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + count);
@@ -895,7 +897,7 @@ xfs_iomap_write_unwritten(
                 */
                XFS_BMAP_INIT(&free_list, &firstfsb);
                nimaps = 1;
-               error = XFS_BMAPI(mp, tp, io, offset_fsb, count_fsb,
+               error = xfs_bmapi(tp, ip, offset_fsb, count_fsb,
                                  XFS_BMAPI_WRITE|XFS_BMAPI_CONVERT, &firstfsb,
                                  1, &imap, &nimaps, &free_list, NULL);
                if (error)
Index: linux-2.6-xfs/fs/xfs/linux-2.6/xfs_ksyms.c
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/linux-2.6/xfs_ksyms.c     2007-09-16 
13:51:33.000000000 +0200
+++ linux-2.6-xfs/fs/xfs/linux-2.6/xfs_ksyms.c  2007-09-18 16:37:22.000000000 
+0200
@@ -248,8 +248,6 @@ EXPORT_SYMBOL(xfs_ilock_nowait);
 EXPORT_SYMBOL(xfs_inode_lock_init);
 EXPORT_SYMBOL(xfs_internal_inum);
 EXPORT_SYMBOL(xfs_iocore_inode_init);
-EXPORT_SYMBOL(xfs_iocore_xfs);
-EXPORT_SYMBOL(xfs_iomap);
 EXPORT_SYMBOL(xfs_iput);
 EXPORT_SYMBOL(xfs_iput_new);
 EXPORT_SYMBOL(xfs_iread);
Index: linux-2.6-xfs/fs/xfs/xfs_dfrag.c
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/xfs_dfrag.c       2007-09-16 13:51:33.000000000 
+0200
+++ linux-2.6-xfs/fs/xfs/xfs_dfrag.c    2007-09-18 16:37:38.000000000 +0200
@@ -111,7 +111,7 @@ xfs_swapext(
                goto error0;
        }
 
-       error = XFS_SWAP_EXTENTS(mp, &ip->i_iocore, &tip->i_iocore, sxp);
+       error = xfs_swap_extents(ip, tip, sxp);
 
  error0:
        if (fp != NULL)
Index: linux-2.6-xfs/fs/xfs/xfs_inode.c
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/xfs_inode.c       2007-09-16 13:51:33.000000000 
+0200
+++ linux-2.6-xfs/fs/xfs/xfs_inode.c    2007-09-18 16:43:12.000000000 +0200
@@ -1709,7 +1709,7 @@ xfs_itruncate_finish(
                 * runs.
                 */
                XFS_BMAP_INIT(&free_list, &first_block);
-               error = XFS_BUNMAPI(mp, ntp, &ip->i_iocore,
+               error = xfs_bunmapi(ntp, ip,
                                    first_unmap_block, unmap_len,
                                    XFS_BMAPI_AFLAG(fork) |
                                      (sync ? 0 : XFS_BMAPI_ASYNC),
@@ -1842,8 +1842,6 @@ xfs_igrow_start(
        xfs_fsize_t     new_size,
        cred_t          *credp)
 {
-       int             error;
-
        ASSERT(ismrlocked(&(ip->i_lock), MR_UPDATE) != 0);
        ASSERT(ismrlocked(&(ip->i_iolock), MR_UPDATE) != 0);
        ASSERT(new_size > ip->i_size);
@@ -1853,9 +1851,7 @@ xfs_igrow_start(
         * xfs_write_file() beyond the end of the file
         * and any blocks between the old and new file sizes.
         */
-       error = xfs_zero_eof(XFS_ITOV(ip), &ip->i_iocore, new_size,
-                            ip->i_size);
-       return error;
+       return xfs_zero_eof(ip, new_size, ip->i_size);
 }
 
 /*
Index: linux-2.6-xfs/fs/xfs/xfs_iocore.c
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/xfs_iocore.c      2007-09-16 13:51:33.000000000 
+0200
+++ linux-2.6-xfs/fs/xfs/xfs_iocore.c   2007-09-18 16:37:22.000000000 +0200
@@ -47,46 +47,6 @@
 #include "xfs_trans_space.h"
 #include "xfs_iomap.h"
 
-
-STATIC xfs_fsize_t
-xfs_size_fn(
-       xfs_inode_t             *ip)
-{
-       return XFS_ISIZE(ip);
-}
-
-STATIC int
-xfs_ioinit(
-       struct xfs_mount        *mp,
-       struct xfs_mount_args   *mntargs,
-       int                     flags)
-{
-       return xfs_mountfs(mp, flags);
-}
-
-xfs_ioops_t    xfs_iocore_xfs = {
-       .xfs_ioinit             = (xfs_ioinit_t) xfs_ioinit,
-       .xfs_bmapi_func         = (xfs_bmapi_t) xfs_bmapi,
-       .xfs_bunmapi_func       = (xfs_bunmapi_t) xfs_bunmapi,
-       .xfs_bmap_eof_func      = (xfs_bmap_eof_t) xfs_bmap_eof,
-       .xfs_iomap_write_direct =
-                       (xfs_iomap_write_direct_t) xfs_iomap_write_direct,
-       .xfs_iomap_write_delay =
-                       (xfs_iomap_write_delay_t) xfs_iomap_write_delay,
-       .xfs_iomap_write_allocate =
-                       (xfs_iomap_write_allocate_t) xfs_iomap_write_allocate,
-       .xfs_iomap_write_unwritten =
-                       (xfs_iomap_write_unwritten_t) xfs_iomap_write_unwritten,
-       .xfs_ilock              = (xfs_lock_t) xfs_ilock,
-       .xfs_lck_map_shared     = (xfs_lck_map_shared_t) xfs_ilock_map_shared,
-       .xfs_ilock_demote       = (xfs_lock_demote_t) xfs_ilock_demote,
-       .xfs_ilock_nowait       = (xfs_lock_nowait_t) xfs_ilock_nowait,
-       .xfs_unlock             = (xfs_unlk_t) xfs_iunlock,
-       .xfs_size_func          = (xfs_size_t) xfs_size_fn,
-       .xfs_iodone             = (xfs_iodone_t) fs_noerr,
-       .xfs_swap_extents_func  = (xfs_swap_extents_t) xfs_swap_extents,
-};
-
 void
 xfs_iocore_inode_reinit(
        xfs_inode_t     *ip)
Index: linux-2.6-xfs/fs/xfs/xfs_mount.c
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/xfs_mount.c       2007-09-18 16:34:38.000000000 
+0200
+++ linux-2.6-xfs/fs/xfs/xfs_mount.c    2007-09-18 16:36:30.000000000 +0200
@@ -1307,7 +1307,6 @@ xfs_unmountfs(xfs_mount_t *mp, struct cr
 #if defined(DEBUG) || defined(INDUCE_IO_ERROR)
        xfs_errortag_clearall(mp, 0);
 #endif
-       XFS_IODONE(mp);
        xfs_mount_free(mp);
        return 0;
 }
Index: linux-2.6-xfs/fs/xfs/xfs_mount.h
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/xfs_mount.h       2007-09-16 13:51:33.000000000 
+0200
+++ linux-2.6-xfs/fs/xfs/xfs_mount.h    2007-09-18 16:37:22.000000000 +0200
@@ -196,105 +196,6 @@ typedef struct xfs_qmops {
 #define XFS_QM_QUOTACTL(mp, cmd, id, addr) \
        (*(mp)->m_qm_ops->xfs_quotactl)(mp, cmd, id, addr)
 
-
-/*
- * Prototypes and functions for I/O core modularization.
- */
-
-typedef int            (*xfs_ioinit_t)(struct xfs_mount *,
-                               struct xfs_mount_args *, int);
-typedef int            (*xfs_bmapi_t)(struct xfs_trans *, void *,
-                               xfs_fileoff_t, xfs_filblks_t, int,
-                               xfs_fsblock_t *, xfs_extlen_t,
-                               struct xfs_bmbt_irec *, int *,
-                               struct xfs_bmap_free *, struct xfs_extdelta *);
-typedef int            (*xfs_bunmapi_t)(struct xfs_trans *,
-                               void *, xfs_fileoff_t,
-                               xfs_filblks_t, int, xfs_extnum_t,
-                               xfs_fsblock_t *, struct xfs_bmap_free *,
-                               struct xfs_extdelta *, int *);
-typedef int            (*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *);
-typedef int            (*xfs_iomap_write_direct_t)(
-                               void *, xfs_off_t, size_t, int,
-                               struct xfs_bmbt_irec *, int *, int);
-typedef int            (*xfs_iomap_write_delay_t)(
-                               void *, xfs_off_t, size_t, int,
-                               struct xfs_bmbt_irec *, int *);
-typedef int            (*xfs_iomap_write_allocate_t)(
-                               void *, xfs_off_t, size_t,
-                               struct xfs_bmbt_irec *, int *);
-typedef int            (*xfs_iomap_write_unwritten_t)(
-                               void *, xfs_off_t, size_t);
-typedef uint           (*xfs_lck_map_shared_t)(void *);
-typedef void           (*xfs_lock_t)(void *, uint);
-typedef void           (*xfs_lock_demote_t)(void *, uint);
-typedef int            (*xfs_lock_nowait_t)(void *, uint);
-typedef void           (*xfs_unlk_t)(void *, unsigned int);
-typedef xfs_fsize_t    (*xfs_size_t)(void *);
-typedef xfs_fsize_t    (*xfs_iodone_t)(struct xfs_mount *);
-typedef int            (*xfs_swap_extents_t)(void *, void *,
-                               struct xfs_swapext*);
-
-typedef struct xfs_ioops {
-       xfs_ioinit_t                    xfs_ioinit;
-       xfs_bmapi_t                     xfs_bmapi_func;
-       xfs_bunmapi_t                   xfs_bunmapi_func;
-       xfs_bmap_eof_t                  xfs_bmap_eof_func;
-       xfs_iomap_write_direct_t        xfs_iomap_write_direct;
-       xfs_iomap_write_delay_t         xfs_iomap_write_delay;
-       xfs_iomap_write_allocate_t      xfs_iomap_write_allocate;
-       xfs_iomap_write_unwritten_t     xfs_iomap_write_unwritten;
-       xfs_lock_t                      xfs_ilock;
-       xfs_lck_map_shared_t            xfs_lck_map_shared;
-       xfs_lock_demote_t               xfs_ilock_demote;
-       xfs_lock_nowait_t               xfs_ilock_nowait;
-       xfs_unlk_t                      xfs_unlock;
-       xfs_size_t                      xfs_size_func;
-       xfs_iodone_t                    xfs_iodone;
-       xfs_swap_extents_t              xfs_swap_extents_func;
-} xfs_ioops_t;
-
-#define XFS_IOINIT(mp, args, flags) \
-       (*(mp)->m_io_ops.xfs_ioinit)(mp, args, flags)
-#define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist,delta) \
-       (*(mp)->m_io_ops.xfs_bmapi_func) \
-               (trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist,delta)
-#define XFS_BUNMAPI(mp, trans,io,bno,len,f,nexts,first,flist,delta,done) \
-       (*(mp)->m_io_ops.xfs_bunmapi_func) \
-               (trans,(io)->io_obj,bno,len,f,nexts,first,flist,delta,done)
-#define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \
-       (*(mp)->m_io_ops.xfs_bmap_eof_func) \
-               ((io)->io_obj, endoff, whichfork, eof)
-#define XFS_IOMAP_WRITE_DIRECT(mp, io, offset, count, flags, mval, nmap, 
found)\
-       (*(mp)->m_io_ops.xfs_iomap_write_direct) \
-               ((io)->io_obj, offset, count, flags, mval, nmap, found)
-#define XFS_IOMAP_WRITE_DELAY(mp, io, offset, count, flags, mval, nmap) \
-       (*(mp)->m_io_ops.xfs_iomap_write_delay) \
-               ((io)->io_obj, offset, count, flags, mval, nmap)
-#define XFS_IOMAP_WRITE_ALLOCATE(mp, io, offset, count, mval, nmap) \
-       (*(mp)->m_io_ops.xfs_iomap_write_allocate) \
-               ((io)->io_obj, offset, count, mval, nmap)
-#define XFS_IOMAP_WRITE_UNWRITTEN(mp, io, offset, count) \
-       (*(mp)->m_io_ops.xfs_iomap_write_unwritten) \
-               ((io)->io_obj, offset, count)
-#define XFS_LCK_MAP_SHARED(mp, io) \
-       (*(mp)->m_io_ops.xfs_lck_map_shared)((io)->io_obj)
-#define XFS_ILOCK(mp, io, mode) \
-       (*(mp)->m_io_ops.xfs_ilock)((io)->io_obj, mode)
-#define XFS_ILOCK_NOWAIT(mp, io, mode) \
-       (*(mp)->m_io_ops.xfs_ilock_nowait)((io)->io_obj, mode)
-#define XFS_IUNLOCK(mp, io, mode) \
-       (*(mp)->m_io_ops.xfs_unlock)((io)->io_obj, mode)
-#define XFS_ILOCK_DEMOTE(mp, io, mode) \
-       (*(mp)->m_io_ops.xfs_ilock_demote)((io)->io_obj, mode)
-#define XFS_SIZE(mp, io) \
-       (*(mp)->m_io_ops.xfs_size_func)((io)->io_obj)
-#define XFS_IODONE(mp) \
-       (*(mp)->m_io_ops.xfs_iodone)(mp)
-#define XFS_SWAP_EXTENTS(mp, io, tio, sxp) \
-       (*(mp)->m_io_ops.xfs_swap_extents_func) \
-               ((io)->io_obj, (tio)->io_obj, sxp)
-
 #ifdef HAVE_PERCPU_SB
 
 /*
@@ -423,7 +324,6 @@ typedef struct xfs_mount {
                                                 * hash table */
        struct xfs_dmops        *m_dm_ops;      /* vector of DMI ops */
        struct xfs_qmops        *m_qm_ops;      /* vector of XQM ops */
-       struct xfs_ioops        m_io_ops;       /* vector of I/O ops */
        atomic_t                m_active_trans; /* number trans frozen */
 #ifdef HAVE_PERCPU_SB
        xfs_icsb_cnts_t         *m_sb_cnts;     /* per-cpu superblock counters 
*/
@@ -646,7 +546,6 @@ extern int  xfs_qmops_get(struct xfs_moun
 extern void    xfs_qmops_put(struct xfs_mount *);
 
 extern struct xfs_dmops xfs_dmcore_xfs;
-extern struct xfs_ioops xfs_iocore_xfs;
 
 extern int     xfs_init(void);
 extern void    xfs_cleanup(void);
Index: linux-2.6-xfs/fs/xfs/xfs_vfsops.c
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/xfs_vfsops.c      2007-09-16 13:51:33.000000000 
+0200
+++ linux-2.6-xfs/fs/xfs/xfs_vfsops.c   2007-09-18 16:36:30.000000000 +0200
@@ -449,8 +449,6 @@ xfs_mount(
        if (error)
                return error;
 
-       mp->m_io_ops = xfs_iocore_xfs;
-
        if (args->flags & XFSMNT_QUIET)
                flags |= XFS_MFSI_QUIET;
 
@@ -544,7 +542,7 @@ xfs_mount(
        if ((error = xfs_filestream_mount(mp)))
                goto error2;
 
-       error = XFS_IOINIT(mp, args, flags);
+       error = xfs_mountfs(mp, flags);
        if (error)
                goto error2;
 
Index: linux-2.6-xfs/fs/xfs/xfs_vnodeops.c
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/xfs_vnodeops.c    2007-09-16 13:51:33.000000000 
+0200
+++ linux-2.6-xfs/fs/xfs/xfs_vnodeops.c 2007-09-18 16:37:22.000000000 +0200
@@ -1187,7 +1187,7 @@ xfs_free_eofblocks(
 
        nimaps = 1;
        xfs_ilock(ip, XFS_ILOCK_SHARED);
-       error = XFS_BMAPI(mp, NULL, &ip->i_iocore, end_fsb, map_len, 0,
+       error = xfs_bmapi(NULL, ip, end_fsb, map_len, 0,
                          NULL, 0, &imap, &nimaps, NULL, NULL);
        xfs_iunlock(ip, XFS_ILOCK_SHARED);
 
@@ -3983,7 +3983,7 @@ retry:
                 * Issue the xfs_bmapi() call to allocate the blocks
                 */
                XFS_BMAP_INIT(&free_list, &firstfsb);
-               error = XFS_BMAPI(mp, tp, &ip->i_iocore, startoffset_fsb,
+               error = xfs_bmapi(tp, ip, startoffset_fsb,
                                  allocatesize_fsb, bmapi_flag,
                                  &firstfsb, 0, imapp, &nimaps,
                                  &free_list, NULL);
@@ -4065,7 +4065,7 @@ xfs_zero_remaining_bytes(
        for (offset = startoff; offset <= endoff; offset = lastoffset + 1) {
                offset_fsb = XFS_B_TO_FSBT(mp, offset);
                nimap = 1;
-               error = XFS_BMAPI(mp, NULL, &ip->i_iocore, offset_fsb, 1, 0,
+               error = xfs_bmapi(NULL, ip, offset_fsb, 1, 0,
                        NULL, 0, &imap, &nimap, NULL, NULL);
                if (error || nimap < 1)
                        break;
@@ -4200,7 +4200,7 @@ xfs_free_file_space(
         */
        if (rt && !XFS_SB_VERSION_HASEXTFLGBIT(&mp->m_sb)) {
                nimap = 1;
-               error = XFS_BMAPI(mp, NULL, &ip->i_iocore, startoffset_fsb,
+               error = xfs_bmapi(NULL, ip, startoffset_fsb,
                        1, 0, NULL, 0, &imap, &nimap, NULL, NULL);
                if (error)
                        goto out_unlock_iolock;
@@ -4215,7 +4215,7 @@ xfs_free_file_space(
                                startoffset_fsb += mp->m_sb.sb_rextsize - mod;
                }
                nimap = 1;
-               error = XFS_BMAPI(mp, NULL, &ip->i_iocore, endoffset_fsb - 1,
+               error = xfs_bmapi(NULL, ip, endoffset_fsb - 1,
                        1, 0, NULL, 0, &imap, &nimap, NULL, NULL);
                if (error)
                        goto out_unlock_iolock;
@@ -4291,7 +4291,7 @@ xfs_free_file_space(
                 * issue the bunmapi() call to free the blocks
                 */
                XFS_BMAP_INIT(&free_list, &firstfsb);
-               error = XFS_BUNMAPI(mp, tp, &ip->i_iocore, startoffset_fsb,
+               error = xfs_bunmapi(tp, ip, startoffset_fsb,
                                  endoffset_fsb - startoffset_fsb,
                                  0, 2, &firstfsb, &free_list, NULL, &done);
                if (error) {
Index: linux-2.6-xfs/fs/xfs/linux-2.6/xfs_aops.c
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/linux-2.6/xfs_aops.c      2007-09-16 
13:51:33.000000000 +0200
+++ linux-2.6-xfs/fs/xfs/linux-2.6/xfs_aops.c   2007-09-18 16:37:22.000000000 
+0200
@@ -317,7 +317,7 @@ xfs_map_blocks(
        xfs_inode_t             *ip = XFS_I(inode);
        int                     error, nmaps = 1;
 
-       error = xfs_bmap(ip, offset, count,
+       error = xfs_iomap(ip, offset, count,
                                flags, mapp, &nmaps);
        if (!error && (flags & (BMAPI_WRITE|BMAPI_ALLOCATE)))
                xfs_iflags_set(ip, XFS_IMODIFIED);
@@ -1342,7 +1342,7 @@ __xfs_get_blocks(
        offset = (xfs_off_t)iblock << inode->i_blkbits;
        ASSERT(bh_result->b_size >= (1 << inode->i_blkbits));
        size = bh_result->b_size;
-       error = xfs_bmap(XFS_I(inode), offset, size,
+       error = xfs_iomap(XFS_I(inode), offset, size,
                             create ? flags : BMAPI_READ, &iomap, &niomap);
        if (error)
                return -error;
Index: linux-2.6-xfs/fs/xfs/xfs_iomap.h
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/xfs_iomap.h       2007-09-18 16:34:31.000000000 
+0200
+++ linux-2.6-xfs/fs/xfs/xfs_iomap.h    2007-09-18 16:36:30.000000000 +0200
@@ -71,11 +71,10 @@ typedef struct xfs_iomap {
        iomap_flags_t           iomap_flags;
 } xfs_iomap_t;
 
-struct xfs_iocore;
 struct xfs_inode;
 struct xfs_bmbt_irec;
 
-extern int xfs_iomap(struct xfs_iocore *, xfs_off_t, ssize_t, int,
+extern int xfs_iomap(struct xfs_inode *, xfs_off_t, ssize_t, int,
                     struct xfs_iomap *, int *);
 extern int xfs_iomap_write_direct(struct xfs_inode *, xfs_off_t, size_t,
                                  int, struct xfs_bmbt_irec *, int *, int);
Index: linux-2.6-xfs/fs/xfs/linux-2.6/xfs_lrw.h
===================================================================
--- linux-2.6-xfs.orig/fs/xfs/linux-2.6/xfs_lrw.h       2007-09-18 
16:43:56.000000000 +0200
+++ linux-2.6-xfs/fs/xfs/linux-2.6/xfs_lrw.h    2007-09-18 16:44:06.000000000 
+0200
@@ -72,7 +72,6 @@ extern int xfsbdstrat(struct xfs_mount *
 extern int xfs_bdstrat_cb(struct xfs_buf *);
 extern int xfs_dev_is_read_only(struct xfs_mount *, char *);
 
-extern int xfs_zero_eof(struct inode *, struct xfs_iocore *, xfs_off_t,
-                               xfs_fsize_t);
+extern int xfs_zero_eof(struct xfs_inode *, xfs_off_t, xfs_fsize_t);
 
 #endif /* __XFS_LRW_H__ */


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