diff options
| author | Jeff Layton | 2017-07-28 07:24:43 -0400 |
|---|---|---|
| committer | Jeff Layton | 2017-07-31 19:12:26 -0400 |
| commit | a823e4589e68996436d16db4ede9a43b646332f9 (patch) | |
| tree | 2961b2c0bd94da25551564b52ff5501918b96fb5 /mm/filemap.c | |
| parent | 7e51fe1dd180e525c9cb9dc613c524c83c130867 (diff) | |
mm: add file_fdatawait_range and file_write_and_wait
Necessary now for gfs2_fsync and sync_file_range, but there will
eventually be other callers.
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Diffstat (limited to 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 72e46e6f0d9a..394bb5e96f87 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -476,6 +476,29 @@ int filemap_fdatawait_range(struct address_space *mapping, loff_t start_byte, EXPORT_SYMBOL(filemap_fdatawait_range); /** + * file_fdatawait_range - wait for writeback to complete + * @file: file pointing to address space structure to wait for + * @start_byte: offset in bytes where the range starts + * @end_byte: offset in bytes where the range ends (inclusive) + * + * Walk the list of under-writeback pages of the address space that file + * refers to, in the given range and wait for all of them. Check error + * status of the address space vs. the file->f_wb_err cursor and return it. + * + * Since the error status of the file is advanced by this function, + * callers are responsible for checking the return value and handling and/or + * reporting the error. + */ +int file_fdatawait_range(struct file *file, loff_t start_byte, loff_t end_byte) +{ + struct address_space *mapping = file->f_mapping; + + __filemap_fdatawait_range(mapping, start_byte, end_byte); + return file_check_and_advance_wb_err(file); +} +EXPORT_SYMBOL(file_fdatawait_range); + +/** * filemap_fdatawait_keep_errors - wait for writeback without clearing errors * @mapping: address space structure to wait for * |