1 files changed, 103 insertions, 19 deletions

diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 095d271f3434..7aa53fefc67f 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -53,6 +53,7 @@
 #include <linux/namei.h>
 #include <linux/security.h>
 #include <linux/falloc.h>
+#include <linux/fiemap.h>
 
 /*
  * Bring the atime in the XFS inode uptodate.
@@ -64,14 +65,14 @@ xfs_synchronize_atime(
 {
         struct inode    *inode = VFS_I(ip);
 
-        if (inode) {
+        if (!(inode->i_state & I_CLEAR)) {
                 ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec;
                 ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec;
         }
 }
 
 /*
- * If the linux inode exists, mark it dirty.
+ * If the linux inode is valid, mark it dirty.
  * Used when commiting a dirty inode into a transaction so that
  * the inode will get written back by the linux code
  */
@@ -81,7 +82,7 @@ xfs_mark_inode_dirty_sync(
 {
         struct inode    *inode = VFS_I(ip);
 
-        if (inode)
+        if (!(inode->i_state & (I_WILL_FREE|I_FREEING|I_CLEAR)))
                 mark_inode_dirty_sync(inode);
 }
 
@@ -128,7 +129,7 @@ xfs_ichgtime(
         if (sync_it) {
                 SYNCHRONIZE();
                 ip->i_update_core = 1;
-                mark_inode_dirty_sync(inode);
+                xfs_mark_inode_dirty_sync(ip);
         }
 }
 
@@ -158,8 +159,6 @@ xfs_init_security(
         }
 
         error = xfs_attr_set(ip, name, value, length, ATTR_SECURE);
-        if (!error)
-                xfs_iflags_set(ip, XFS_IMODIFIED);
 
         kfree(name);
         kfree(value);
@@ -260,7 +259,6 @@ xfs_vn_mknod(
                 error = _ACL_INHERIT(inode, mode, default_acl);
                 if (unlikely(error))
                         goto out_cleanup_inode;
-                xfs_iflags_set(ip, XFS_IMODIFIED);
                 _ACL_FREE(default_acl);
         }
 
@@ -366,21 +364,17 @@ xfs_vn_link(
         struct inode    *dir,
         struct dentry   *dentry)
 {
-        struct inode    *inode; /* inode of guy being linked to */
+        struct inode    *inode = old_dentry->d_inode;
         struct xfs_name name;
         int             error;
 
-        inode = old_dentry->d_inode;
         xfs_dentry_to_name(&name, dentry);
 
-        igrab(inode);
         error = xfs_link(XFS_I(dir), XFS_I(inode), &name);
-        if (unlikely(error)) {
-                iput(inode);
+        if (unlikely(error))
                 return -error;
-        }
 
-        xfs_iflags_set(XFS_I(dir), XFS_IMODIFIED);
+        atomic_inc(&inode->i_count);
         d_instantiate(dentry, inode);
         return 0;
 }
@@ -601,7 +595,7 @@ xfs_vn_setattr(
         struct dentry   *dentry,
         struct iattr    *iattr)
 {
-        return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0, NULL);
+        return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0);
 }
 
 /*
@@ -642,7 +636,7 @@ xfs_vn_fallocate(
 
         xfs_ilock(ip, XFS_IOLOCK_EXCL);
         error = xfs_change_file_space(ip, XFS_IOC_RESVSP, &bf,
-                                      0, NULL, XFS_ATTR_NOLOCK);
+                                      0, XFS_ATTR_NOLOCK);
         if (!error && !(mode & FALLOC_FL_KEEP_SIZE) &&
             offset + len > i_size_read(inode))
                 new_size = offset + len;
@@ -653,7 +647,7 @@ xfs_vn_fallocate(
 
                 iattr.ia_valid = ATTR_SIZE;
                 iattr.ia_size = new_size;
-                error = xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK, NULL);
+                error = xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK);
         }
 
         xfs_iunlock(ip, XFS_IOLOCK_EXCL);
@@ -661,6 +655,88 @@ out_error:
         return error;
 }
 
+#define XFS_FIEMAP_FLAGS        (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR)
+
+/*
+ * Call fiemap helper to fill in user data.
+ * Returns positive errors to xfs_getbmap.
+ */
+STATIC int
+xfs_fiemap_format(
+        void                    **arg,
+        struct getbmapx         *bmv,
+        int                     *full)
+{
+        int                     error;
+        struct fiemap_extent_info *fieinfo = *arg;
+        u32                     fiemap_flags = 0;
+        u64                     logical, physical, length;
+
+        /* Do nothing for a hole */
+        if (bmv->bmv_block == -1LL)
+                return 0;
+
+        logical = BBTOB(bmv->bmv_offset);
+        physical = BBTOB(bmv->bmv_block);
+        length = BBTOB(bmv->bmv_length);
+
+        if (bmv->bmv_oflags & BMV_OF_PREALLOC)
+                fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN;
+        else if (bmv->bmv_oflags & BMV_OF_DELALLOC) {
+                fiemap_flags |= FIEMAP_EXTENT_DELALLOC;
+                physical = 0;   /* no block yet */
+        }
+        if (bmv->bmv_oflags & BMV_OF_LAST)
+                fiemap_flags |= FIEMAP_EXTENT_LAST;
+
+        error = fiemap_fill_next_extent(fieinfo, logical, physical,
+                                        length, fiemap_flags);
+        if (error > 0) {
+                error = 0;
+                *full = 1;      /* user array now full */
+        }
+
+        return -error;
+}
+
+STATIC int
+xfs_vn_fiemap(
+        struct inode            *inode,
+        struct fiemap_extent_info *fieinfo,
+        u64                     start,
+        u64                     length)
+{
+        xfs_inode_t             *ip = XFS_I(inode);
+        struct getbmapx         bm;
+        int                     error;
+
+        error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS);
+        if (error)
+                return error;
+
+        /* Set up bmap header for xfs internal routine */
+        bm.bmv_offset = BTOBB(start);
+        /* Special case for whole file */
+        if (length == FIEMAP_MAX_OFFSET)
+                bm.bmv_length = -1LL;
+        else
+                bm.bmv_length = BTOBB(length);
+
+        /* our formatter will tell xfs_getbmap when to stop. */
+        bm.bmv_count = MAXEXTNUM;
+        bm.bmv_iflags = BMV_IF_PREALLOC;
+        if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR)
+                bm.bmv_iflags |= BMV_IF_ATTRFORK;
+        if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC))
+                bm.bmv_iflags |= BMV_IF_DELALLOC;
+
+        error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo);
+        if (error)
+                return -error;
+
+        return 0;
+}
+
 static const struct inode_operations xfs_inode_operations = {
         .permission             = xfs_vn_permission,
         .truncate               = xfs_vn_truncate,
@@ -671,6 +747,7 @@ static const struct inode_operations xfs_inode_operations = {
         .removexattr            = generic_removexattr,
         .listxattr              = xfs_vn_listxattr,
         .fallocate              = xfs_vn_fallocate,
+        .fiemap                 = xfs_vn_fiemap,
 };
 
 static const struct inode_operations xfs_dir_inode_operations = {
@@ -766,12 +843,20 @@ xfs_diflags_to_iflags(
  * When reading existing inodes from disk this is called directly
  * from xfs_iget, when creating a new inode it is called from
  * xfs_ialloc after setting up the inode.
+ *
+ * We are always called with an uninitialised linux inode here.
+ * We need to initialise the necessary fields and take a reference
+ * on it.
  */
 void
 xfs_setup_inode(
         struct xfs_inode        *ip)
 {
-        struct inode            *inode = ip->i_vnode;
+        struct inode            *inode = &ip->i_vnode;
+
+        inode->i_ino = ip->i_ino;
+        inode->i_state = I_NEW|I_LOCK;
+        inode_add_to_lists(ip->i_mount->m_super, inode);
 
         inode->i_mode   = ip->i_d.di_mode;
         inode->i_nlink  = ip->i_d.di_nlink;
@@ -799,7 +884,6 @@ xfs_setup_inode(
         inode->i_ctime.tv_sec   = ip->i_d.di_ctime.t_sec;
         inode->i_ctime.tv_nsec  = ip->i_d.di_ctime.t_nsec;
         xfs_diflags_to_iflags(inode, ip);
-        xfs_iflags_clear(ip, XFS_IMODIFIED);
 
         switch (inode->i_mode & S_IFMT) {
         case S_IFREG: