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authorChristoph Hellwig <hch@lst.de>2019-10-17 13:12:17 -0700
committerDarrick J. Wong <darrick.wong@oracle.com>2019-10-21 08:51:59 -0700
commit3e19e6f3eeea26490a84cdd18c7220e640f4837e (patch)
tree35d0a98e33851bc5fb975a840c1bed11533e136c /fs/iomap
parent598ecfbaa742aca0dcdbbea25681406f95cc0b63 (diff)
iomap: warn on inline maps in iomap_writepage_map
And inline mapping should never mark the page dirty and thus never end up in writepages. Add a check for that condition and warn if it happens. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/iomap')
-rw-r--r--fs/iomap/buffered-io.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 41e1828a0bb3..901c1a799238 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -1415,6 +1415,8 @@ iomap_writepage_map(struct iomap_writepage_ctx *wpc,
error = wpc->ops->map_blocks(wpc, inode, file_offset);
if (error)
break;
+ if (WARN_ON_ONCE(wpc->iomap.type == IOMAP_INLINE))
+ continue;
if (wpc->iomap.type == IOMAP_HOLE)
continue;
iomap_add_to_ioend(inode, file_offset, page, iop, wpc, wbc,