linux.git/fs/splice.c, branch v4.0

fs: add vfs_iter_{read,write} helpers

2015-01-29T05:13:13+00:00

Simple helpers that pass an arbitrary iov_iter to filesystems.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Al Viro

new helper: iov_iter_bvec()

2015-01-29T05:13:11+00:00

similar to iov_iter_kvec(), for ITER_BVEC ones

Signed-off-by: Al Viro

vfs: export do_splice_direct() to modules

2014-10-23T22:14:35+00:00

Export do_splice_direct() to modules.  Needed by overlay filesystem.

Signed-off-by: Miklos Szeredi

Merge commit '9f12600fe425bc28f0ccba034a77783c09c15af4' into for-linus

2014-06-12T04:28:09+00:00

Backmerge of dcache.c changes from mainline.  It's that, or complete
rebase...

Conflicts:
	fs/splice.c

Signed-off-by: Al Viro

kill generic_file_splice_write()

2014-06-12T04:21:13+00:00

no callers left

Signed-off-by: Al Viro

fs/splice.c: remove unneeded exports

2014-06-12T04:21:11+00:00

ocfs2 was using a bunch of splice.c guts...

Signed-off-by: Al Viro

->splice_write() via ->write_iter()

2014-06-12T04:18:51+00:00

iter_file_splice_write() - a ->splice_write() instance that gathers the
pipe buffers, builds a bio_vec-based iov_iter covering those and feeds
it to ->write_iter().  A bunch of simple cases coverted to that...

[AV: fixed the braino spotted by Cyrill]

Signed-off-by: Al Viro

vfs: fix vmplice_to_user()

2014-05-28T05:54:52+00:00

Commit 6130f5315ee8 "switch vmsplice_to_user() to copy_page_to_iter()" in
v3.15-rc1 broke vmsplice(2).

This patch fixes two bugs:

 - count is not initialized to a proper value, which resulted in no data
   being copied

 - if rw_copy_check_uvector() returns negative then the iov might be leaked.

Tested OK.

Signed-off-by: Miklos Szeredi 
Signed-off-by: Al Viro

start adding the tag to iov_iter

2014-05-06T21:32:49+00:00

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

switch vmsplice_to_user() to copy_page_to_iter()

2014-04-02T03:19:23+00:00

I've switched the sanity checks on iovec to rw_copy_check_uvector();
we might need to do a local analog, if any behaviour differences are
not actually bugfixes here...

Signed-off-by: Al Viro