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start adding the tag to iov_iter

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For now, just use the same thing we pass to ->direct_IO() - it's all
iovec-based at the moment.  Pass it explicitly to iov_iter_init() and
account for kvec vs. iovec in there, by the same kludge NFS ->direct_IO()
uses.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2014-03-05 19:28:09 -05:00
parent ed978a811e
commit 71d8e532b1
15 changed files with 41 additions and 35 deletions
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mm/process_vm_access.c
+2 -2
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@@ -274,7 +274,7 @@ static ssize_t process_vm_rw(pid_t pid,
if (rc <= 0)
goto free_iovecs;
iov_iter_init(&iter, iov_l, liovcnt, rc, 0);
iov_iter_init(&iter, vm_write ? WRITE : READ, iov_l, liovcnt, rc);
rc = rw_copy_check_uvector(CHECK_IOVEC_ONLY, rvec, riovcnt, UIO_FASTIOV,
iovstack_r, &iov_r);
@@ -337,7 +337,7 @@ compat_process_vm_rw(compat_pid_t pid,
&iov_l);
if (rc <= 0)
goto free_iovecs;
iov_iter_init(&iter, iov_l, liovcnt, rc, 0);
iov_iter_init(&iter, vm_write ? WRITE : READ, iov_l, liovcnt, rc);
rc = compat_rw_copy_check_uvector(CHECK_IOVEC_ONLY, rvec, riovcnt,
UIO_FASTIOV, iovstack_r,
&iov_r);