1 files changed, 1 insertions, 177 deletions

diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index 7e1c2ae81c35..45cf5a2fd1bf 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -1385,7 +1385,7 @@ xfs_free_file_space(
 }
 
 
-STATIC int
+int
 xfs_zero_file_space(
         struct xfs_inode        *ip,
         xfs_off_t               offset,
@@ -1446,182 +1446,6 @@ out:
 }
 
 /*
- * xfs_change_file_space()
- *      This routine allocates or frees disk space for the given file.
- *      The user specified parameters are checked for alignment and size
- *      limitations.
- *
- * RETURNS:
- *       0 on success
- *      errno on error
- *
- */
-int
-xfs_change_file_space(
-        xfs_inode_t     *ip,
-        int             cmd,
-        xfs_flock64_t   *bf,
-        xfs_off_t       offset,
-        int             attr_flags)
-{
-        xfs_mount_t     *mp = ip->i_mount;
-        int             clrprealloc;
-        int             error;
-        xfs_fsize_t     fsize;
-        int             setprealloc;
-        xfs_off_t       startoffset;
-        xfs_trans_t     *tp;
-        struct iattr    iattr;
-
-        if (!S_ISREG(ip->i_d.di_mode))
-                return XFS_ERROR(EINVAL);
-
-        switch (bf->l_whence) {
-        case 0: /*SEEK_SET*/
-                break;
-        case 1: /*SEEK_CUR*/
-                bf->l_start += offset;
-                break;
-        case 2: /*SEEK_END*/
-                bf->l_start += XFS_ISIZE(ip);
-                break;
-        default:
-                return XFS_ERROR(EINVAL);
-        }
-
-        /*
-         * length of <= 0 for resv/unresv/zero is invalid.  length for
-         * alloc/free is ignored completely and we have no idea what userspace
-         * might have set it to, so set it to zero to allow range
-         * checks to pass.
-         */
-        switch (cmd) {
-        case XFS_IOC_ZERO_RANGE:
-        case XFS_IOC_RESVSP:
-        case XFS_IOC_RESVSP64:
-        case XFS_IOC_UNRESVSP:
-        case XFS_IOC_UNRESVSP64:
-                if (bf->l_len <= 0)
-                        return XFS_ERROR(EINVAL);
-                break;
-        default:
-                bf->l_len = 0;
-                break;
-        }
-
-        if (bf->l_start < 0 ||
-            bf->l_start > mp->m_super->s_maxbytes ||
-            bf->l_start + bf->l_len < 0 ||
-            bf->l_start + bf->l_len >= mp->m_super->s_maxbytes)
-                return XFS_ERROR(EINVAL);
-
-        bf->l_whence = 0;
-
-        startoffset = bf->l_start;
-        fsize = XFS_ISIZE(ip);
-
-        setprealloc = clrprealloc = 0;
-        switch (cmd) {
-        case XFS_IOC_ZERO_RANGE:
-                error = xfs_zero_file_space(ip, startoffset, bf->l_len);
-                if (error)
-                        return error;
-                setprealloc = 1;
-                break;
-
-        case XFS_IOC_RESVSP:
-        case XFS_IOC_RESVSP64:
-                error = xfs_alloc_file_space(ip, startoffset, bf->l_len,
-                                                XFS_BMAPI_PREALLOC);
-                if (error)
-                        return error;
-                setprealloc = 1;
-                break;
-
-        case XFS_IOC_UNRESVSP:
-        case XFS_IOC_UNRESVSP64:
-                error = xfs_free_file_space(ip, startoffset, bf->l_len);
-                if (error)
-                        return error;
-                break;
-
-        case XFS_IOC_ALLOCSP:
-        case XFS_IOC_ALLOCSP64:
-        case XFS_IOC_FREESP:
-        case XFS_IOC_FREESP64:
-                /*
-                 * These operations actually do IO when extending the file, but
-                 * the allocation is done seperately to the zeroing that is
-                 * done. This set of operations need to be serialised against
-                 * other IO operations, such as truncate and buffered IO. We
-                 * need to take the IOLOCK here to serialise the allocation and
-                 * zeroing IO to prevent other IOLOCK holders (e.g. getbmap,
-                 * truncate, direct IO) from racing against the transient
-                 * allocated but not written state we can have here.
-                 */
-                if (startoffset > fsize) {
-                        error = xfs_alloc_file_space(ip, fsize,
-                                        startoffset - fsize, 0);
-                        if (error)
-                                break;
-                }
-
-                iattr.ia_valid = ATTR_SIZE;
-                iattr.ia_size = startoffset;
-
-                error = xfs_setattr_size(ip, &iattr);
-
-                if (error)
-                        return error;
-
-                clrprealloc = 1;
-                break;
-
-        default:
-                ASSERT(0);
-                return XFS_ERROR(EINVAL);
-        }
-
-        /*
-         * update the inode timestamp, mode, and prealloc flag bits
-         */
-        tp = xfs_trans_alloc(mp, XFS_TRANS_WRITEID);
-        error = xfs_trans_reserve(tp, &M_RES(mp)->tr_writeid, 0, 0);
-        if (error) {
-                xfs_trans_cancel(tp, 0);
-                return error;
-        }
-
-        xfs_ilock(ip, XFS_ILOCK_EXCL);
-        xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
-
-        if ((attr_flags & XFS_ATTR_DMI) == 0) {
-                ip->i_d.di_mode &= ~S_ISUID;
-
-                /*
-                 * Note that we don't have to worry about mandatory
-                 * file locking being disabled here because we only
-                 * clear the S_ISGID bit if the Group execute bit is
-                 * on, but if it was on then mandatory locking wouldn't
-                 * have been enabled.
-                 */
-                if (ip->i_d.di_mode & S_IXGRP)
-                        ip->i_d.di_mode &= ~S_ISGID;
-
-                xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
-        }
-        if (setprealloc)
-                ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC;
-        else if (clrprealloc)
-                ip->i_d.di_flags &= ~XFS_DIFLAG_PREALLOC;
-
-        xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
-        if (attr_flags & XFS_ATTR_SYNC)
-                xfs_trans_set_sync(tp);
-        return xfs_trans_commit(tp, 0);
-}
-
-/*
  * We need to check that the format of the data fork in the temporary inode is
  * valid for the target inode before doing the swap. This is not a problem with
  * attr1 because of the fixed fork offset, but attr2 has a dynamically sized