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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 <axboe@fb.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Jens Axboe 2016-11-01 10:00:38 -06:00
parent 1d796d6a96
commit 7637241e65
8 changed files with 17 additions and 16 deletions
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2
fs/buffer.c
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@ -1697,7 +1697,7 @@ int __block_write_full_page(struct inode *inode, struct page *page,
struct buffer_head *bh, *head;
unsigned int blocksize, bbits;
int nr_underway = 0;
int write_flags = (wbc->sync_mode == WB_SYNC_ALL ? REQ_SYNC : 0);
int write_flags = wbc_to_write_flags(wbc);
head = create_page_buffers(page, inode,
(1 << BH_Dirty)|(1 << BH_Uptodate));