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fs: iomap based fiemap implementation

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Add a simple fiemap implementation based on iomap_ops, partially based
on a previous implementation from Bob Peterson <rpeterso@redhat.com>.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Christoph Hellwig
2016-06-21 09:38:45 +10:00
committed by Dave Chinner
parent 9a286f0e52
commit 8be9f564d2
2 changed files with 93 additions and 0 deletions
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3
include/linux/iomap.h
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@@ -3,6 +3,7 @@
#include <linux/types.h>
struct fiemap_extent_info;
struct inode;
struct iov_iter;
struct kiocb;
@@ -63,5 +64,7 @@ int iomap_truncate_page(struct inode *inode, loff_t pos, bool *did_zero,
struct iomap_ops *ops);
int iomap_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
struct iomap_ops *ops);
int iomap_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
loff_t start, loff_t len, struct iomap_ops *ops);
#endif /* LINUX_IOMAP_H */