xfs: remove local fork format handling from xfs_bmapi_write()

The conversion from local format to extent format requires
interpretation of the data in the fork being converted, so it cannot
be done in a generic way. It is up to the caller to convert the fork
format to extent format before calling into xfs_bmapi_write() so
format conversion can be done correctly.

The code in xfs_bmapi_write() to convert the format is used
implicitly by the attribute and directory code, but they
specifically zero the fork size so that the conversion does not do
any allocation or manipulation. Move this conversion into the
shortform to leaf functions for the dir/attr code so the conversions
are explicitly controlled by all callers.

Now we can remove the conversion code in xfs_bmapi_write.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

1 files changed, 12 insertions, 8 deletions

diff --git a/fs/xfs/xfs_dir2_block.c b/fs/xfs/xfs_dir2_block.c
index e59f5fc816fe..53b9aa26d567 100644
--- a/fs/xfs/xfs_dir2_block.c
+++ b/fs/xfs/xfs_dir2_block.c
@@ -29,6 +29,7 @@
 #include "xfs_dinode.h"
 #include "xfs_inode.h"
 #include "xfs_inode_item.h"
+#include "xfs_bmap.h"
 #include "xfs_buf_item.h"
 #include "xfs_dir2.h"
 #include "xfs_dir2_format.h"
@@ -1167,13 +1168,15 @@ xfs_dir2_sf_to_block(
 	__be16			*tagp;		/* end of data entry */
 	xfs_trans_t		*tp;		/* transaction pointer */
 	struct xfs_name		name;
+	struct xfs_ifork	*ifp;
 
 	trace_xfs_dir2_sf_to_block(args);
 
 	dp = args->dp;
 	tp = args->trans;
 	mp = dp->i_mount;
-	ASSERT(dp->i_df.if_flags & XFS_IFINLINE);
+	ifp = XFS_IFORK_PTR(dp, XFS_DATA_FORK);
+	ASSERT(ifp->if_flags & XFS_IFINLINE);
 	/*
 	 * Bomb out if the shortform directory is way too short.
 	 */
@@ -1182,22 +1185,23 @@ xfs_dir2_sf_to_block(
 		return XFS_ERROR(EIO);
 	}
 
-	oldsfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data;
+	oldsfp = (xfs_dir2_sf_hdr_t *)ifp->if_u1.if_data;
 
-	ASSERT(dp->i_df.if_bytes == dp->i_d.di_size);
-	ASSERT(dp->i_df.if_u1.if_data != NULL);
+	ASSERT(ifp->if_bytes == dp->i_d.di_size);
+	ASSERT(ifp->if_u1.if_data != NULL);
 	ASSERT(dp->i_d.di_size >= xfs_dir2_sf_hdr_size(oldsfp->i8count));
+	ASSERT(dp->i_d.di_nextents == 0);
 
 	/*
 	 * Copy the directory into a temporary buffer.
 	 * Then pitch the incore inode data so we can make extents.
 	 */
-	sfp = kmem_alloc(dp->i_df.if_bytes, KM_SLEEP);
-	memcpy(sfp, oldsfp, dp->i_df.if_bytes);
+	sfp = kmem_alloc(ifp->if_bytes, KM_SLEEP);
+	memcpy(sfp, oldsfp, ifp->if_bytes);
 
-	xfs_idata_realloc(dp, -dp->i_df.if_bytes, XFS_DATA_FORK);
+	xfs_idata_realloc(dp, -ifp->if_bytes, XFS_DATA_FORK);
+	xfs_bmap_local_to_extents_empty(dp, XFS_DATA_FORK);
 	dp->i_d.di_size = 0;
-	xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE);
 
 	/*
 	 * Add block 0 to the inode.