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authorChristoph Hellwig <hch@lst.de>2016-08-17 08:44:52 +1000
committerDave Chinner <david@fromorbit.com>2016-08-17 08:44:52 +1000
commitb95a21271b30544a9fb992269d79ed1e1978e023 (patch)
treef588bd7b73544d470b4f23389f36c1de5889cce1 /fs
parentf20ac7ab17fcf7046bd9bc4166faf9580f713afd (diff)
downloadlinux-b95a21271b30544a9fb992269d79ed1e1978e023.tar.gz
xfs: simplify xfs_file_iomap_begin
We'll never get nimap == 0 for a successful return from xfs_bmapi_read,
so don't try to handle it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>


Diffstat (limited to 'fs')
-rw-r--r--fs/xfs/xfs_iomap.c14
-rw-r--r--fs/xfs/xfs_trace.h1
2 files changed, 4 insertions, 11 deletions
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 2114d53df433..1cce760399a2 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -1037,20 +1037,14 @@ xfs_file_iomap_begin(
 			return error;
 
 		trace_xfs_iomap_alloc(ip, offset, length, 0, &imap);
-		xfs_bmbt_to_iomap(ip, iomap, &imap);
-	} else if (nimaps) {
-		xfs_iunlock(ip, XFS_ILOCK_EXCL);
-		trace_xfs_iomap_found(ip, offset, length, 0, &imap);
-		xfs_bmbt_to_iomap(ip, iomap, &imap);
 	} else {
+		ASSERT(nimaps);
+
 		xfs_iunlock(ip, XFS_ILOCK_EXCL);
-		trace_xfs_iomap_not_found(ip, offset, length, 0, &imap);
-		iomap->blkno = IOMAP_NULL_BLOCK;
-		iomap->type = IOMAP_HOLE;
-		iomap->offset = offset;
-		iomap->length = length;
+		trace_xfs_iomap_found(ip, offset, length, 0, &imap);
 	}
 
+	xfs_bmbt_to_iomap(ip, iomap, &imap);
 	return 0;
 }
 
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index 551b7e26980c..7e88bec3f359 100644
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -1298,7 +1298,6 @@ DEFINE_IOMAP_EVENT(xfs_get_blocks_alloc);
 DEFINE_IOMAP_EVENT(xfs_get_blocks_map_direct);
 DEFINE_IOMAP_EVENT(xfs_iomap_alloc);
 DEFINE_IOMAP_EVENT(xfs_iomap_found);
-DEFINE_IOMAP_EVENT(xfs_iomap_not_found);
 
 DECLARE_EVENT_CLASS(xfs_simple_io_class,
 	TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count),