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| author | Matthew Wilcox <matthew.r.wilcox@intel.com> | 2014-06-04 16:07:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-04 16:54:02 -0700 |
| commit | 57d998456ae8680ed446aa1993f45f4d8a9a5973 (patch) | |
| tree | 9e6eef3413adffabf06dc10dafab03c02d21c8be /mm | |
| parent | 90768eee4565adb28ea28b4ac5081c676a8fe1f2 (diff) | |
| download | linux-57d998456ae8680ed446aa1993f45f4d8a9a5973.tar.bz2 | |
fs/mpage.c: factor page_endio() out of mpage_end_io()
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 <matthew.r.wilcox@intel.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Dheeraj Reddy <dheeraj.reddy@intel.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/filemap.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 021056c324e6..47d235b357a7 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -764,6 +764,31 @@ void end_page_writeback(struct page *page) } EXPORT_SYMBOL(end_page_writeback); +/* + * After completing I/O on a page, call this routine to update the page + * flags appropriately + */ +void page_endio(struct page *page, int rw, int err) +{ + if (rw == READ) { + if (!err) { + SetPageUptodate(page); + } else { + ClearPageUptodate(page); + SetPageError(page); + } + unlock_page(page); + } else { /* rw == WRITE */ + if (err) { + SetPageError(page); + if (page->mapping) + mapping_set_error(page->mapping, err); + } + end_page_writeback(page); + } +} +EXPORT_SYMBOL_GPL(page_endio); + /** * __lock_page - get a lock on the page, assuming we need to sleep to get it * @page: the page to lock |