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f2fs: introduce f2fs_replace_block() for reuse

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Introduce a generic function replace_block base on recover_data_page,
and export it. So with it we can operate file's meta data which is in
CP/SSA area when we invoke fallocate with FALLOC_FL_COLLAPSE_RANGE
flag.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu
2015-05-06 13:08:06 +08:00
committed by Jaegeuk Kim
parent d5b692b786
commit 19f106bc03
3 changed files with 27 additions and 10 deletions
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fs/f2fs/f2fs.h
+2 -2
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@@ -1638,8 +1638,8 @@ void write_meta_page(struct f2fs_sb_info *, struct page *);
void write_node_page(unsigned int, struct f2fs_io_info *);
void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
void rewrite_data_page(struct f2fs_io_info *);
void recover_data_page(struct f2fs_sb_info *, struct page *,
struct f2fs_summary *, block_t, block_t);
void f2fs_replace_block(struct f2fs_sb_info *, struct f2fs_summary *,
block_t, block_t, bool);
void allocate_data_block(struct f2fs_sb_info *, struct page *,
block_t, block_t *, struct f2fs_summary *, int);
void f2fs_wait_on_page_writeback(struct page *, enum page_type);