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iomap: add IOMAP_REPORT

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This allows the file system to tell a FIEMAP from a read operation, and thus
avoids the need to report flags that aren't actually used in the read path.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Christoph Hellwig
2016-10-20 15:51:28 +11:00
committed by Dave Chinner
parent 5faaf4fa0a
commit d33fd776f9
2 changed files with 12 additions and 7 deletions
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fs/iomap.c
+1 -1
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@@ -561,7 +561,7 @@ int iomap_fiemap(struct inode *inode, struct fiemap_extent_info *fi,
}
while (len > 0) {
ret = iomap_apply(inode, start, len, 0, ops, &ctx,
ret = iomap_apply(inode, start, len, IOMAP_REPORT, ops, &ctx,
iomap_fiemap_actor);
/* inode with no (attribute) mapping will give ENOENT */
if (ret == -ENOENT)