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yangerkun authored
While do swap, we should make sure there has no new dirty page since we should swap i_data between two inode: 1.We should lock i_mmap_sem with write to avoid new pagecache from mmap read/write; 2.Change filemap_flush to filemap_write_and_wait and move them to the space protected by inode lock to avoid new pagecache from buffer read/write. Signed-off-by:
yangerkun <yangerkun@huawei.com> Signed-off-by:
Theodore Ts'o <tytso@mit.edu> Cc: stable@kernel.org
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