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| author | Dave Airlie <airlied@redhat.com> | 2015-04-20 11:32:26 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2015-04-20 13:05:20 +1000 |
| commit | 2c33ce009ca2389dbf0535d0672214d09738e35e (patch) | |
| tree | 6186a6458c3c160385d794a23eaf07c786a9e61b /mm/process_vm_access.c | |
| parent | cec32a47010647e8b0603726ebb75b990a4057a4 (diff) | |
| parent | 09d51602cf84a1264946711dd4ea0dddbac599a1 (diff) | |
| download | linux-stable-2c33ce009ca2389dbf0535d0672214d09738e35e.tar.gz linux-stable-2c33ce009ca2389dbf0535d0672214d09738e35e.tar.bz2 linux-stable-2c33ce009ca2389dbf0535d0672214d09738e35e.zip | |
Merge Linus master into drm-next
The merge is clean, but the arm build fails afterwards,
due to API changes in the regulator tree.
I've included the patch into the merge to fix the build.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'mm/process_vm_access.c')
| -rw-r--r-- | mm/process_vm_access.c | 35 |
1 files changed, 12 insertions, 23 deletions
diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c index b1597690530c..e88d071648c2 100644 --- a/mm/process_vm_access.c +++ b/mm/process_vm_access.c @@ -257,22 +257,18 @@ static ssize_t process_vm_rw(pid_t pid, struct iovec *iov_r = iovstack_r; struct iov_iter iter; ssize_t rc; + int dir = vm_write ? WRITE : READ; if (flags != 0) return -EINVAL; /* Check iovecs */ - if (vm_write) - rc = rw_copy_check_uvector(WRITE, lvec, liovcnt, UIO_FASTIOV, - iovstack_l, &iov_l); - else - rc = rw_copy_check_uvector(READ, lvec, liovcnt, UIO_FASTIOV, - iovstack_l, &iov_l); - if (rc <= 0) + rc = import_iovec(dir, lvec, liovcnt, UIO_FASTIOV, &iov_l, &iter); + if (rc < 0) + return rc; + if (!iov_iter_count(&iter)) goto free_iovecs; - 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); if (rc <= 0) @@ -283,8 +279,7 @@ static ssize_t process_vm_rw(pid_t pid, free_iovecs: if (iov_r != iovstack_r) kfree(iov_r); - if (iov_l != iovstack_l) - kfree(iov_l); + kfree(iov_l); return rc; } @@ -320,21 +315,16 @@ compat_process_vm_rw(compat_pid_t pid, struct iovec *iov_r = iovstack_r; struct iov_iter iter; ssize_t rc = -EFAULT; + int dir = vm_write ? WRITE : READ; if (flags != 0) return -EINVAL; - if (vm_write) - rc = compat_rw_copy_check_uvector(WRITE, lvec, liovcnt, - UIO_FASTIOV, iovstack_l, - &iov_l); - else - rc = compat_rw_copy_check_uvector(READ, lvec, liovcnt, - UIO_FASTIOV, iovstack_l, - &iov_l); - if (rc <= 0) + rc = compat_import_iovec(dir, lvec, liovcnt, UIO_FASTIOV, &iov_l, &iter); + if (rc < 0) + return rc; + if (!iov_iter_count(&iter)) goto free_iovecs; - 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); @@ -346,8 +336,7 @@ compat_process_vm_rw(compat_pid_t pid, free_iovecs: if (iov_r != iovstack_r) kfree(iov_r); - if (iov_l != iovstack_l) - kfree(iov_l); + kfree(iov_l); return rc; } |