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authorJosef Bacik <josef@redhat.com>2012-05-23 22:13:11 +0400
committerJosef Bacik <josef@redhat.com>2012-05-30 18:23:36 +0400
commit72ac3c0d7921f943d92d1ef42a549fb52e56817d (patch)
treec8825a2b3848f201a2b67b3a2ec0aaf9669f9ed3 /fs/btrfs/btrfs_inode.h
parentcd023e7b17fe86c530475da210b3348421c40e5f (diff)
downloadlinux-72ac3c0d7921f943d92d1ef42a549fb52e56817d.tar.xz
Btrfs: convert the inode bit field to use the actual bit operations
Miao pointed this out while I was working on an orphan problem that messing with a bitfield where different ranges are protected by different locks doesn't work out right. Turns out we've been doing this forever where we have different parts of the bit field protected by either no lock at all or different locks which could cause all sorts of weird problems including the issue I was hitting. So instead make a runtime_flags thing that we use the normal bit operations on that are all atomic so we can keep having our no/different locking for the different flags and then make force_compress it's own thing so it can be treated normally. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>
Diffstat (limited to 'fs/btrfs/btrfs_inode.h')
-rw-r--r--fs/btrfs/btrfs_inode.h30
1 files changed, 16 insertions, 14 deletions
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index 3771b8543a7e..6265edb219e2 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -24,6 +24,19 @@
#include "ordered-data.h"
#include "delayed-inode.h"
+/*
+ * ordered_data_close is set by truncate when a file that used
+ * to have good data has been truncated to zero. When it is set
+ * the btrfs file release call will add this inode to the
+ * ordered operations list so that we make sure to flush out any
+ * new data the application may have written before commit.
+ */
+#define BTRFS_INODE_ORDERED_DATA_CLOSE 0
+#define BTRFS_INODE_ORPHAN_META_RESERVED 1
+#define BTRFS_INODE_DUMMY 2
+#define BTRFS_INODE_IN_DEFRAG 3
+#define BTRFS_INODE_DELALLOC_META_RESERVED 4
+
/* in memory btrfs inode */
struct btrfs_inode {
/* which subvolume this inode belongs to */
@@ -78,6 +91,8 @@ struct btrfs_inode {
/* the space_info for where this inode's data allocations are done */
struct btrfs_space_info *space_info;
+ unsigned long runtime_flags;
+
/* full 64 bit generation number, struct vfs_inode doesn't have a big
* enough field for this.
*/
@@ -142,22 +157,9 @@ struct btrfs_inode {
unsigned reserved_extents;
/*
- * ordered_data_close is set by truncate when a file that used
- * to have good data has been truncated to zero. When it is set
- * the btrfs file release call will add this inode to the
- * ordered operations list so that we make sure to flush out any
- * new data the application may have written before commit.
- */
- unsigned ordered_data_close:1;
- unsigned orphan_meta_reserved:1;
- unsigned dummy_inode:1;
- unsigned in_defrag:1;
- unsigned delalloc_meta_reserved:1;
-
- /*
* always compress this one file
*/
- unsigned force_compress:4;
+ unsigned force_compress;
struct btrfs_delayed_node *delayed_node;