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btrfs: introduce helper to handle page status update in end_bio_extent_readpage() 

Introduce a new helper to handle update page status in
end_bio_extent_readpage(). This will be later used for subpage support
where the page status update can be more complex than now.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2020-11-13 20:51:29 +08:00 committed by David Sterba
parent 94e8c95ccb
commit e09caaf913
1 changed files with 13 additions and 5 deletions
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18
fs/btrfs/extent_io.c
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@ -2842,6 +2842,17 @@ update:
processed->uptodate = uptodate;
}
static void endio_readpage_update_page_status(struct page *page, bool uptodate)
{
if (uptodate) {
SetPageUptodate(page);
} else {
ClearPageUptodate(page);
SetPageError(page);
}
unlock_page(page);
}
/*
* after a readpage IO is done, we need to:
* clear the uptodate bits on error
@ -2964,14 +2975,11 @@ readpage_ok:
off = offset_in_page(i_size);
if (page->index == end_index && off)
zero_user_segment(page, off, PAGE_SIZE);
SetPageUptodate(page);
} else {
ClearPageUptodate(page);
SetPageError(page);
}
unlock_page(page);
offset += len;
/* Update page status and unlock */
endio_readpage_update_page_status(page, uptodate);
endio_readpage_release_extent(&processed, BTRFS_I(inode),
start, end, uptodate);
}