fs/direct-io.c: keep dio_warn_stale_pagecache() when CONFIG_BLOCK=n
This helper prints warning if direct I/O write failed to invalidate cache, and set EIO at inode to warn usersapce about possible data corruption. See also commit 5a9d929d ("iomap: report collisions between directio and buffered writes to userspace"). Direct I/O is supported by non-disk filesystems, for example NFS. Thus generic code needs this even in kernel without CONFIG_BLOCK. Link: http://lkml.kernel.org/r/157270038074.4812.7980855544557488880.stgit@buzz Signed-off-by:Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Reviewed-by:
Andrew Morton <akpm@linux-foundation.org> Reviewed-by:
Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@kernel.dk> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
parent
80c1fe90
Please register or sign in to comment