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vfs: pass a flags argument to vfs_readv/vfs_writev

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This way we can set kiocb flags also from the sync read/write path for
the read_iter/write_iter operations.  For now there is no way to pass
flags to plain read/write operations as there is no real need for that,
and all flags passed are explicitly rejected for these files.

Signed-off-by: Milosz Tanski <[email protected]>
[hch: rebased on top of my kiocb changes]
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Stephen Bates <[email protected]>
Tested-by: Stephen Bates <[email protected]>
Acked-by: Jeff Moyer <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Christoph Hellwig 2016-03-03 16:03:58 +01:00 • committed by Al Viro
commit 793b80ef14
4 changed files with 31 additions and 23 deletions
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fs/splice.c
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@ -577,7 +577,7 @@ static ssize_t kernel_readv(struct file *file, const struct iovec *vec,
old_fs = get_fs();
set_fs(get_ds());
/* The cast to a user pointer is valid due to the set_fs() */
res = vfs_readv(file, (const struct iovec __user *)vec, vlen, &pos);
res = vfs_readv(file, (const struct iovec __user *)vec, vlen, &pos, 0);
set_fs(old_fs);
return res;