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fs/mpage.c: factor page_endio() out of mpage_end_io()

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page_endio() takes care of updating all the appropriate page flags once
I/O has finished to a page.  Switch to using mapping_set_error() instead
of setting AS_EIO directly; this will handle thin-provisioned devices
correctly.

Signed-off-by: Matthew Wilcox <[email protected]>
Cc: Dave Chinner <[email protected]>
Cc: Dheeraj Reddy <[email protected]>
Cc: Hugh Dickins <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Matthew Wilcox 2014-06-04 16:07:45 -07:00 • committed by Linus Torvalds
commit 57d998456a
3 changed files with 28 additions and 17 deletions
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18
fs/mpage.c
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@ -48,23 +48,7 @@ static void mpage_end_io(struct bio *bio, int err)
bio_for_each_segment_all(bv, bio, i) {
struct page *page = bv->bv_page;
if (bio_data_dir(bio) == READ) {
if (!err) {
SetPageUptodate(page);
} else {
ClearPageUptodate(page);
SetPageError(page);
}
unlock_page(page);
} else { /* bio_data_dir(bio) == WRITE */
if (err) {
SetPageError(page);
if (page->mapping)
set_bit(AS_EIO, &page->mapping->flags);
}
end_page_writeback(page);
}
page_endio(page, bio_data_dir(bio), err);
}
bio_put(bio);