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| author | Al Viro <viro@zeniv.linux.org.uk> | 2014-03-06 04:28:09 +0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-05-07 01:32:49 +0400 |
| commit | 71d8e532b1549a478e6a6a8a44f309d050294d00 (patch) | |
| tree | 58b40c17cbb806c94aa07121a8b010d16f825d27 /mm | |
| parent | ed978a811ec528dbe40243605c3afab55892f722 (diff) | |
| download | linux-71d8e532b1549a478e6a6a8a44f309d050294d00.tar.xz | |
start adding the tag to iov_iter
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>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/filemap.c | 4 | ||||
| -rw-r--r-- | mm/iov_iter.c | 15 | ||||
| -rw-r--r-- | mm/page_io.c | 2 | ||||
| -rw-r--r-- | mm/process_vm_access.c | 4 | ||||
| -rw-r--r-- | mm/shmem.c | 2 |
5 files changed, 21 insertions, 6 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index a7f79e90209c..3aeaf2df4135 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1730,7 +1730,7 @@ generic_file_aio_read(struct kiocb *iocb, const struct iovec *iov, size_t count = iov_length(iov, nr_segs); struct iov_iter i; - iov_iter_init(&i, iov, nr_segs, count, 0); + iov_iter_init(&i, READ, iov, nr_segs, count); return generic_file_read_iter(iocb, &i); } EXPORT_SYMBOL(generic_file_aio_read); @@ -2596,7 +2596,7 @@ ssize_t __generic_file_aio_write(struct kiocb *iocb, const struct iovec *iov, if (err) goto out; - iov_iter_init(&from, iov, nr_segs, count, 0); + iov_iter_init(&from, WRITE, iov, nr_segs, count); /* coalesce the iovecs and go direct-to-BIO for O_DIRECT */ if (unlikely(file->f_flags & O_DIRECT)) { diff --git a/mm/iov_iter.c b/mm/iov_iter.c index 2f762cc21080..e2c9a2db4350 100644 --- a/mm/iov_iter.c +++ b/mm/iov_iter.c @@ -220,3 +220,18 @@ unsigned long iov_iter_alignment(const struct iov_iter *i) return res; } EXPORT_SYMBOL(iov_iter_alignment); + +void iov_iter_init(struct iov_iter *i, int direction, + const struct iovec *iov, unsigned long nr_segs, + size_t count) +{ + /* It will get better. Eventually... */ + if (segment_eq(get_fs(), KERNEL_DS)) + direction |= REQ_KERNEL; + i->type = direction; + i->iov = iov; + i->nr_segs = nr_segs; + i->iov_offset = 0; + i->count = count; +} +EXPORT_SYMBOL(iov_iter_init); diff --git a/mm/page_io.c b/mm/page_io.c index 0ed0644c73db..313bfedb75d1 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -268,7 +268,7 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc, init_sync_kiocb(&kiocb, swap_file); kiocb.ki_pos = page_file_offset(page); kiocb.ki_nbytes = PAGE_SIZE; - iov_iter_init(&from, &iov, 1, PAGE_SIZE, 0); + iov_iter_init(&from, KERNEL_WRITE, &iov, 1, PAGE_SIZE); set_page_writeback(page); unlock_page(page); diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c index f32b1fbbfe69..5077afcd9e11 100644 --- a/mm/process_vm_access.c +++ b/mm/process_vm_access.c @@ -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); diff --git a/mm/shmem.c b/mm/shmem.c index 2a93e625adaf..e0b76696c3f9 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -1417,7 +1417,7 @@ static ssize_t shmem_file_aio_read(struct kiocb *iocb, loff_t *ppos = &iocb->ki_pos; struct iov_iter iter; - iov_iter_init(&iter, iov, nr_segs, count, 0); + iov_iter_init(&iter, READ, iov, nr_segs, count); /* * Might this read be for a stacking filesystem? Then when reading |