diff options
| author | Goldwyn Rodrigues <rgoldwyn@suse.com> | 2017-06-20 07:05:41 -0500 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-06-20 07:12:03 -0600 |
| commit | 7fc9e4722435cd8459182c4975f48934f2bb1274 (patch) | |
| tree | 44a50b5cfa0379939111ef900f73b4c2657c83a4 /include | |
| parent | fdd2f5b7de2afaa931e5f7bad7bcda35d1f1b479 (diff) | |
fs: Introduce filemap_range_has_page()
filemap_range_has_page() return true if the file's mapping has
a page within the range mentioned. This function will be used
to check if a write() call will cause a writeback of previous
writes.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/fs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 96a1a1fa54a9..0d34f5b5a6b0 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2518,6 +2518,8 @@ extern int filemap_fdatawait(struct address_space *); extern void filemap_fdatawait_keep_errors(struct address_space *); extern int filemap_fdatawait_range(struct address_space *, loff_t lstart, loff_t lend); +extern bool filemap_range_has_page(struct address_space *, loff_t lstart, + loff_t lend); extern int filemap_write_and_wait(struct address_space *mapping); extern int filemap_write_and_wait_range(struct address_space *mapping, loff_t lstart, loff_t lend); |