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authorChristoph Hellwig <hch@infradead.org>2012-02-29 09:53:55 +0000
committerBen Myers <bpm@sgi.com>2012-03-13 17:18:14 -0500
commit8f639ddea0c4978ae9b4e46ea041c9e5afe0ee8d (patch)
treed2b90c868fd3ad818317e3fff8448d6940afb3d5 /fs/xfs/xfs_inode_item.h
parentf5d8d5c4bf29c9f7754d9cbe5e27c785106ba872 (diff)
downloadop-kernel-dev-8f639ddea0c4978ae9b4e46ea041c9e5afe0ee8d.zip
op-kernel-dev-8f639ddea0c4978ae9b4e46ea041c9e5afe0ee8d.tar.gz
xfs: reimplement fdatasync support
Add an in-memory only flag to say we logged timestamps only, and use it to check if fdatasync can optimize away the log force. Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_inode_item.h')
-rw-r--r--fs/xfs/xfs_inode_item.h11
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/xfs/xfs_inode_item.h b/fs/xfs/xfs_inode_item.h
index bc183d8..41d61c3 100644
--- a/fs/xfs/xfs_inode_item.h
+++ b/fs/xfs/xfs_inode_item.h
@@ -86,6 +86,15 @@ typedef struct xfs_inode_log_format_64 {
#define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */
#define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */
+
+/*
+ * The timestamps are dirty, but not necessarily anything else in the inode
+ * core. Unlike the other fields above this one must never make it to disk
+ * in the ilf_fields of the inode_log_format, but is purely store in-memory in
+ * ili_fields in the inode_log_item.
+ */
+#define XFS_ILOG_TIMESTAMP 0x4000
+
#define XFS_ILOG_NONCORE (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
XFS_ILOG_DBROOT | XFS_ILOG_DEV | \
XFS_ILOG_UUID | XFS_ILOG_ADATA | \
@@ -101,7 +110,7 @@ typedef struct xfs_inode_log_format_64 {
XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \
XFS_ILOG_DEV | XFS_ILOG_UUID | \
XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
- XFS_ILOG_ABROOT)
+ XFS_ILOG_ABROOT | XFS_ILOG_TIMESTAMP)
static inline int xfs_ilog_fbroot(int w)
{
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