diff options
| author | Christoph Hellwig <hch@infradead.org> | 2012-02-29 09:53:55 (GMT) |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2012-03-13 22:18:14 (GMT) |
| commit | 8f639ddea0c4978ae9b4e46ea041c9e5afe0ee8d (patch) | |
| tree | d2b90c868fd3ad818317e3fff8448d6940afb3d5 | |
| parent | f5d8d5c4bf29c9f7754d9cbe5e27c785106ba872 (diff) | |
| download | linux-8f639ddea0c4978ae9b4e46ea041c9e5afe0ee8d.tar.xz | |
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>
| -rw-r--r-- | fs/xfs/xfs_file.c | 7 | ||||
| -rw-r--r-- | fs/xfs/xfs_inode_item.c | 3 | ||||
| -rw-r--r-- | fs/xfs/xfs_inode_item.h | 11 | ||||
| -rw-r--r-- | fs/xfs/xfs_super.c | 2 |
4 files changed, 18 insertions, 5 deletions
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 78d8b02..54a67dd 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -197,8 +197,11 @@ xfs_file_fsync( * to flush the log up to the latest LSN that touched the inode. */ xfs_ilock(ip, XFS_ILOCK_SHARED); - if (xfs_ipincount(ip)) - lsn = ip->i_itemp->ili_last_lsn; + if (xfs_ipincount(ip)) { + if (!datasync || + (ip->i_itemp->ili_fields & ~XFS_ILOG_TIMESTAMP)) + lsn = ip->i_itemp->ili_last_lsn; + } xfs_iunlock(ip, XFS_ILOCK_SHARED); if (lsn) diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c index 8becef4..05d924e 100644 --- a/fs/xfs/xfs_inode_item.c +++ b/fs/xfs/xfs_inode_item.c @@ -438,7 +438,8 @@ out: * games in recovery easier, which isn't a big deal as just about any * transaction would dirty it anyway. */ - iip->ili_format.ilf_fields = XFS_ILOG_CORE | iip->ili_fields; + iip->ili_format.ilf_fields = XFS_ILOG_CORE | + (iip->ili_fields & ~XFS_ILOG_TIMESTAMP); iip->ili_format.ilf_size = nvecs; } 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) { diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index e602c8c..e9ad789 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -907,7 +907,7 @@ xfs_fs_dirty_inode( ip->i_d.di_mtime.t_nsec = (__int32_t)inode->i_mtime.tv_nsec; xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP); error = xfs_trans_commit(tp, 0); if (error) goto trouble; |