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Merge patch series "fixes for uncached IO"

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Two fixes for uncached IO.

* patches from https://lore.kernel.org/r/20250218120209.88093-1-jefflexu@linux.alibaba.com:
  mm/truncate: don't skip dirty page in folio_unmap_invalidate()
  mm/filemap: fix miscalculated file range for filemap_fdatawrite_range_kick()

Link: https://lore.kernel.org/r/20250218120209.88093-1-jefflexu@linux.alibaba.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner 2025-02-21 14:09:53 +01:00
commit 4c7a22bda6
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GPG key ID: 91C61BC06578DCA2
3 changed files with 3 additions and 5 deletions
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4
include/linux/fs.h
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@ -2975,8 +2975,8 @@ static inline ssize_t generic_write_sync(struct kiocb *iocb, ssize_t count)
} else if (iocb->ki_flags & IOCB_DONTCACHE) {
struct address_space *mapping = iocb->ki_filp->f_mapping;
filemap_fdatawrite_range_kick(mapping, iocb->ki_pos,
iocb->ki_pos + count);
filemap_fdatawrite_range_kick(mapping, iocb->ki_pos - count,
iocb->ki_pos - 1);
}
return count;

2
mm/filemap.c
View file

@ -445,7 +445,7 @@ EXPORT_SYMBOL(filemap_fdatawrite_range);
* filemap_fdatawrite_range_kick - start writeback on a range
* @mapping: target address_space
* @start: index to start writeback on
* @end: last (non-inclusive) index for writeback
* @end: last (inclusive) index for writeback
*
* This is a non-integrity writeback helper, to start writing back folios
* for the indicated range.

2
mm/truncate.c
View file

@ -548,8 +548,6 @@ int folio_unmap_invalidate(struct address_space *mapping, struct folio *folio,
VM_BUG_ON_FOLIO(!folio_test_locked(folio), folio);
if (folio_test_dirty(folio))
return 0;
if (folio_mapped(folio))
unmap_mapping_folio(folio);
BUG_ON(folio_mapped(folio));