pnfsblock: basic extent code
Adds structures and basic create/delete code for extents.
Signed-off-by: Fred Isaman <iisaman@citi.umich.edu>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Zhang Jingwang <Jingwang.Zhang@emc.com>
Signed-off-by: Benny Halevy <bhalevy@tonian.com>
Signed-off-by: Jim Rees <rees@umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c
index 1f5287c..8dde372 100644
--- a/fs/nfs/blocklayout/blocklayout.c
+++ b/fs/nfs/blocklayout/blocklayout.c
@@ -53,12 +53,24 @@
return PNFS_NOT_ATTEMPTED;
}
-/* STUB */
+/* FIXME - range ignored */
static void
-release_extents(struct pnfs_block_layout *bl,
- struct pnfs_layout_range *range)
+release_extents(struct pnfs_block_layout *bl, struct pnfs_layout_range *range)
{
- return;
+ int i;
+ struct pnfs_block_extent *be;
+
+ spin_lock(&bl->bl_ext_lock);
+ for (i = 0; i < EXTENT_LISTS; i++) {
+ while (!list_empty(&bl->bl_extents[i])) {
+ be = list_first_entry(&bl->bl_extents[i],
+ struct pnfs_block_extent,
+ be_node);
+ list_del(&be->be_node);
+ bl_put_extent(be);
+ }
+ }
+ spin_unlock(&bl->bl_ext_lock);
}
/* STUB */