Export interfaces of dax_map/unmap_atomic() for usage in moving data pages of DAX files in garbage collection of F2FS.
Signed-off-by: Qiuyang Sun <[email protected]> --- fs/dax.c | 6 ++++-- include/linux/dax.h | 3 +++ 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index 85abd74..615a4c1 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -55,7 +55,7 @@ static int __init init_dax_wait_table(void) } fs_initcall(init_dax_wait_table); -static long dax_map_atomic(struct block_device *bdev, struct blk_dax_ctl *dax) +long dax_map_atomic(struct block_device *bdev, struct blk_dax_ctl *dax) { struct request_queue *q = bdev->bd_queue; long rc = -EIO; @@ -72,14 +72,16 @@ static long dax_map_atomic(struct block_device *bdev, struct blk_dax_ctl *dax) } return rc; } +EXPORT_SYMBOL_GPL(dax_map_atomic); -static void dax_unmap_atomic(struct block_device *bdev, +void dax_unmap_atomic(struct block_device *bdev, const struct blk_dax_ctl *dax) { if (IS_ERR(dax->addr)) return; blk_queue_exit(bdev->bd_queue); } +EXPORT_SYMBOL_GPL(dax_unmap_atomic); static int dax_is_pmd_entry(void *entry) { diff --git a/include/linux/dax.h b/include/linux/dax.h index d8a3dc0..b6451b2 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -7,6 +7,7 @@ #include <asm/pgtable.h> struct iomap_ops; +struct blk_dax_ctl; /* * We use lowest available bit in exceptional entry for locking, one bit for @@ -36,6 +37,8 @@ static inline void *dax_radix_locked_entry(sector_t sector, unsigned long flags) RADIX_DAX_ENTRY_LOCK); } +long dax_map_atomic(struct block_device *bdev, struct blk_dax_ctl *dax); +void dax_unmap_atomic(struct block_device *bdev, const struct blk_dax_ctl *dax); ssize_t dax_iomap_rw(struct kiocb *iocb, struct iov_iter *iter, const struct iomap_ops *ops); int dax_iomap_fault(struct vm_fault *vmf, enum page_entry_size pe_size, -- 1.8.3.1 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
