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fs: implement vfs_iter_write using do_iter_write

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De-dupliate some code and allow for passing the flags argument to
vfs_iter_write.  Additionally it now properly updates timestamps.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig 2017-05-27 11:16:52 +03:00 • committed by Al Viro
parent 18e9710ee5
commit abbb65899a
6 changed files with 16 additions and 26 deletions
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3
include/linux/fs.h
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@ -2791,7 +2791,8 @@ extern ssize_t generic_perform_write(struct file *, struct iov_iter *, loff_t);
ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos,
int flags);
ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos);
ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos,
int flags);
/* fs/block_dev.c */
extern ssize_t blkdev_read_iter(struct kiocb *iocb, struct iov_iter *to);