[XFS] kill xfs_iocore_t

xfs_iocore_t is a structure embedded in xfs_inode. Except for one field it
just duplicates fields already in xfs_inode, and there is nothing this
abstraction buys us on XFS/Linux. This patch removes it and shrinks source
and binary size of xfs aswell as shrinking the size of xfs_inode by 60/44
bytes in debug/non-debug builds.

SGI-PV: 970852
SGI-Modid: xfs-linux-melb:xfs-kern:29754a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>

1 files changed, 12 insertions, 18 deletions

diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 4821b8563c41..d16f40cdf5f6 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -57,8 +57,6 @@ xfs_iomap_enter_trace(
         xfs_off_t       offset,
         ssize_t         count)
 {
-        xfs_iocore_t    *io = &ip->i_iocore;
-
         if (!ip->i_rwtrace)
                 return;
 
@@ -70,8 +68,8 @@ xfs_iomap_enter_trace(
                 (void *)((unsigned long)((offset >> 32) & 0xffffffff)),
                 (void *)((unsigned long)(offset & 0xffffffff)),
                 (void *)((unsigned long)count),
-                (void *)((unsigned long)((io->io_new_size >> 32) & 0xffffffff)),
-                (void *)((unsigned long)(io->io_new_size & 0xffffffff)),
+                (void *)((unsigned long)((ip->i_new_size >> 32) & 0xffffffff)),
+                (void *)((unsigned long)(ip->i_new_size & 0xffffffff)),
                 (void *)((unsigned long)current_pid()),
                 (void *)NULL,
                 (void *)NULL,
@@ -186,8 +184,6 @@ xfs_iomap(
         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);
@@ -402,7 +398,6 @@ xfs_iomap_write_direct(
         int             found)
 {
         xfs_mount_t     *mp = ip->i_mount;
-        xfs_iocore_t    *io = &ip->i_iocore;
         xfs_fileoff_t   offset_fsb;
         xfs_fileoff_t   last_fsb;
         xfs_filblks_t   count_fsb, resaligned;
@@ -432,8 +427,8 @@ xfs_iomap_write_direct(
         extsz = xfs_get_extsz_hint(ip);
 
         isize = ip->i_size;
-        if (io->io_new_size > isize)
-                isize = io->io_new_size;
+        if (ip->i_new_size > isize)
+                isize = ip->i_new_size;
 
         offset_fsb = XFS_B_TO_FSBT(mp, offset);
         last_fsb = XFS_B_TO_FSB(mp, ((xfs_ufsize_t)(offset + count)));
@@ -528,7 +523,8 @@ xfs_iomap_write_direct(
                 goto error_out;
         }
 
-        if (unlikely(!imap.br_startblock && !(io->io_flags & XFS_IOCORE_RT))) {
+        if (unlikely(!imap.br_startblock &&
+                     !(ip->i_d.di_flags & XFS_DIFLAG_REALTIME))) {
                 error = xfs_cmn_err_fsblock_zero(ip, &imap);
                 goto error_out;
         }
@@ -616,7 +612,6 @@ xfs_iomap_write_delay(
         int             *nmaps)
 {
         xfs_mount_t     *mp = ip->i_mount;
-        xfs_iocore_t    *io = &ip->i_iocore;
         xfs_fileoff_t   offset_fsb;
         xfs_fileoff_t   last_fsb;
         xfs_off_t       aligned_offset;
@@ -644,8 +639,8 @@ xfs_iomap_write_delay(
 
 retry:
         isize = ip->i_size;
-        if (io->io_new_size > isize)
-                isize = io->io_new_size;
+        if (ip->i_new_size > isize)
+                isize = ip->i_new_size;
 
         error = xfs_iomap_eof_want_preallocate(mp, ip, isize, offset, count,
                                 ioflag, imap, XFS_WRITE_IMAPS, &prealloc);
@@ -691,7 +686,8 @@ retry:
                 goto retry;
         }
 
-        if (unlikely(!imap[0].br_startblock && !(io->io_flags & XFS_IOCORE_RT)))
+        if (unlikely(!imap[0].br_startblock &&
+                     !(ip->i_d.di_flags & XFS_DIFLAG_REALTIME)))
                 return xfs_cmn_err_fsblock_zero(ip, &imap[0]);
 
         *ret_imap = imap[0];
@@ -716,7 +712,6 @@ xfs_iomap_write_allocate(
         int             *retmap)
 {
         xfs_mount_t     *mp = ip->i_mount;
-        xfs_iocore_t    *io = &ip->i_iocore;
         xfs_fileoff_t   offset_fsb, last_block;
         xfs_fileoff_t   end_fsb, map_start_fsb;
         xfs_fsblock_t   first_block;
@@ -814,7 +809,7 @@ xfs_iomap_write_allocate(
                  */
                 for (i = 0; i < nimaps; i++) {
                         if (unlikely(!imap[i].br_startblock &&
-                                     !(io->io_flags & XFS_IOCORE_RT)))
+                                     !(ip->i_d.di_flags & XFS_DIFLAG_REALTIME)))
                                 return xfs_cmn_err_fsblock_zero(ip, &imap[i]);
                         if ((offset_fsb >= imap[i].br_startoff) &&
                             (offset_fsb < (imap[i].br_startoff +
@@ -850,7 +845,6 @@ xfs_iomap_write_unwritten(
         size_t          count)
 {
         xfs_mount_t     *mp = ip->i_mount;
-        xfs_iocore_t    *io = &ip->i_iocore;
         xfs_fileoff_t   offset_fsb;
         xfs_filblks_t   count_fsb;
         xfs_filblks_t   numblks_fsb;
@@ -913,7 +907,7 @@ xfs_iomap_write_unwritten(
                         return XFS_ERROR(error);
 
                 if (unlikely(!imap.br_startblock &&
-                             !(io->io_flags & XFS_IOCORE_RT)))
+                             !(ip->i_d.di_flags & XFS_DIFLAG_REALTIME)))
                         return xfs_cmn_err_fsblock_zero(ip, &imap);
 
                 if ((numblks_fsb = imap.br_blockcount) == 0) {