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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2017-02-18 01:44:03 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-10-11 22:36:54 -0400 |
| commit | 09cf698a594276139b7dfafb232af3fe4fbc4438 (patch) | |
| tree | 163c2dbfca800af81aed88f993e6db004093c35b /include/linux/uio.h | |
| parent | lnet_return_rx_credits_locked: don't abuse list_entry (diff) | |
| download | linux-dev-09cf698a594276139b7dfafb232af3fe4fbc4438.tar.xz linux-dev-09cf698a594276139b7dfafb232af3fe4fbc4438.zip | |
new primitive: iov_iter_for_each_range()
For kvec and bvec: feeds segments to given callback as long as it
returns 0. For iovec and pipe: fails.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/uio.h')
| -rw-r--r-- | include/linux/uio.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/uio.h b/include/linux/uio.h index 5885daeae721..e67e12adb136 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h @@ -244,4 +244,8 @@ int compat_import_iovec(int type, const struct compat_iovec __user * uvector, int import_single_range(int type, void __user *buf, size_t len, struct iovec *iov, struct iov_iter *i); +int iov_iter_for_each_range(struct iov_iter *i, size_t bytes, + int (*f)(struct kvec *vec, void *context), + void *context); + #endif |