shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-06 02:50:49 +09:00
Code Issues Packages Projects Releases Wiki Activity

iomap: Remove large folio handling in iomap_invalidate_folio()

Browse Source 
[ Upstream commit a221ab717c ]

We do not need to release the iomap_page in iomap_invalidate_folio()
to allow the folio to be split.  The splitting code will call
->release_folio() if there is still per-fs private data attached to
the folio.  At that point, we will check if the folio is still dirty
and decline to release the iomap_page.  It is possible to trigger the
warning in perfectly legitimate circumstances (eg if a disk read fails,
we do a partial write to the folio, then we truncate the folio), which
will cause those writes to be lost.

Fixes: 60d8231089 ("iomap: Support large folios in invalidatepage")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Matthew Wilcox (Oracle)
2023-06-02 18:09:11 -04:00
committed by Greg Kroah-Hartman
parent b553ac4894
commit 254c396da3
1 changed files with 0 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
fs/iomap/buffered-io.c
View File

@@ -488,11 +488,6 @@ void iomap_invalidate_folio(struct folio *folio, size_t offset, size_t len)
WARN_ON_ONCE(folio_test_writeback(folio)); WARN_ON_ONCE(folio_test_writeback(folio));
folio_cancel_dirty(folio); folio_cancel_dirty(folio);
iomap_page_release(folio); iomap_page_release(folio);
} else if (folio_test_large(folio)) {
/* Must release the iop so the page can be split */
WARN_ON_ONCE(!folio_test_uptodate(folio) &&
folio_test_dirty(folio));
iomap_page_release(folio);
} }
} }
EXPORT_SYMBOL_GPL(iomap_invalidate_folio); EXPORT_SYMBOL_GPL(iomap_invalidate_folio);