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writeback: add wbc_to_write_flags()

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Add wbc_to_write_flags(), which returns the write modifier flags to use,
based on a struct writeback_control. No functional changes in this
patch, but it prepares us for factoring other wbc fields for write type.

Signed-off-by: Jens Axboe <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
This commit is contained in:
Jens Axboe 2016-11-01 10:00:38 -06:00
commit 7637241e65
8 changed files with 17 additions and 16 deletions
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2
fs/mpage.c
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@ -489,7 +489,7 @@ static int __mpage_writepage(struct page *page, struct writeback_control *wbc,
struct buffer_head map_bh;
loff_t i_size = i_size_read(inode);
int ret = 0;
int op_flags = (wbc->sync_mode == WB_SYNC_ALL ? REQ_SYNC : 0);
int op_flags = wbc_to_write_flags(wbc);
if (page_has_buffers(page)) {
struct buffer_head *head = page_buffers(page);