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由 Jan Kara 提交于
Currently we do not allow unlocked (meaning without inode_lock) direct IO when the file has any pages cached. This check is not needed anymore as we keep inode lock until ext4_direct_IO_write() and thus can happily writeback and evict any pages conflicting with current direct IO write. Signed-off-by: NJan Kara <jack@suse.cz> Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
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