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| author |   Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-09-21 08:58:42 -0700 |
|---|---|---|
| committer |   Darrick J. Wong <darrick.wong@oracle.com> | 2020-09-21 08:59:27 -0700 |
| commit | 81ee8e52a71c712dbe04994f1430cb4c88b87ad6 (patch) | |
| tree | 37eb6d637a39ee3bbf679e4ec182aeeab9b3c4af /include/linux/dax.h | |
| parent | iomap: Convert iomap_write_end types (diff) | |
| download | wireguard-linux-81ee8e52a71c712dbe04994f1430cb4c88b87ad6.tar.xz wireguard-linux-81ee8e52a71c712dbe04994f1430cb4c88b87ad6.zip | |
iomap: Change calling convention for zeroing
Pass the full length to iomap_zero() and dax_iomap_zero(), and have
them return how many bytes they actually handled. This is preparatory
work for handling THP, although it looks like DAX could actually take
advantage of it if there's a larger contiguous area.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'include/linux/dax.h')
| -rw-r--r-- | include/linux/dax.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/include/linux/dax.h b/include/linux/dax.h index 6904d4e0b2e0..951a851a0481 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -214,8 +214,7 @@ vm_fault_t dax_finish_sync_fault(struct vm_fault *vmf, int dax_delete_mapping_entry(struct address_space *mapping, pgoff_t index); int dax_invalidate_mapping_entry_sync(struct address_space *mapping, pgoff_t index); -int dax_iomap_zero(loff_t pos, unsigned offset, unsigned size, - struct iomap *iomap); +s64 dax_iomap_zero(loff_t pos, u64 length, struct iomap *iomap); static inline bool dax_mapping(struct address_space *mapping) { return mapping->host && IS_DAX(mapping->host); |