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authorzhengbin <zhengbin13@huawei.com>2019-03-05 15:44:21 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-05 21:07:16 -0800
commit35f12f0f5c3bbd60caba89351f45c8eef8ffd423 (patch)
tree09ad6b0d6a943a7a45849a45339b93bac35e4b4c /mm
parentd71e53cee7c2e553b85c572e76da778a93d32135 (diff)
mm/filemap: pass inclusive 'end_byte' parameter to filemap_range_has_page
The 'end_byte' parameter of filemap_range_has_page is required to be inclusive, so follow the rule. Link: http://lkml.kernel.org/r/1548678679-18122-1-git-send-email-zhengbin13@huawei.com Fixes: 6be96d3ad34a ("fs: return if direct I/O will trigger writeback") Signed-off-by: zhengbin <zhengbin13@huawei.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Matthew Wilcox <willy@infradead.org> Acked-by: Christoph Hellwig <hch@lst.de> Cc: "Darrick J. Wong" <darrick.wong@oracle.com> Cc: Amir Goldstein <amir73il@gmail.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Hugh Dickins <hughd@google.com> Cc: Hou Tao <houtao1@huawei.com> Cc: zhangyi (F) <yi.zhang@huawei.com> Cc: Jan Kara <jack@suse.cz> 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.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index 935fbc29aeb1..e59fdecdab74 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -3071,7 +3071,7 @@ generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from)
if (iocb->ki_flags & IOCB_NOWAIT) {
/* If there are pages to writeback, return */
if (filemap_range_has_page(inode->i_mapping, pos,
- pos + write_len))
+ pos + write_len - 1))
return -EAGAIN;
} else {
written = filemap_write_and_wait_range(mapping, pos,