diff options
| author | Konstantin Khlebnikov | 2019-11-30 17:49:44 -0800 |
|---|---|---|
| committer | Linus Torvalds | 2019-12-01 06:29:18 -0800 |
| commit | a92853b6746fe5ffef20a7c30addf6320561e669 (patch) | |
| tree | 42fad039d35b3de85db3abd12458e1cc7cf18c35 /include | |
| parent | 80c1fe902691d3ef4786f9e62e47a0aa0deb8b54 (diff) | |
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 5a9d929d6e13 ("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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/fs.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index ae6c5c37f3ae..eeed80fab36a 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -3149,7 +3149,6 @@ enum { }; void dio_end_io(struct bio *bio); -void dio_warn_stale_pagecache(struct file *filp); ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode, struct block_device *bdev, struct iov_iter *iter, @@ -3194,6 +3193,11 @@ static inline void inode_dio_end(struct inode *inode) wake_up_bit(&inode->i_state, __I_DIO_WAKEUP); } +/* + * Warn about a page cache invalidation failure diring a direct I/O write. + */ +void dio_warn_stale_pagecache(struct file *filp); + extern void inode_set_flags(struct inode *inode, unsigned int flags, unsigned int mask); |