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(parent: f6161aa) | patch
Don't bother with redoing rw_verify_area() from default_file_splice_from()
authorAl Viro <viro@zeniv.linux.org.uk>
Wed, 20 Mar 2013 17:19:30 +0000 (13:19 -0400)
committerAl Viro <viro@zeniv.linux.org.uk>
Thu, 21 Mar 2013 17:11:11 +0000 (13:11 -0400)
commit06ae43f34bcc07a0b6be8bf78a1c895bcd12c839
treeb74fe0c7e9370dfed956a1607dd10282c9ba1096tree | snapshot (tar.gz zip)
parentf6161aa153581da4a3867a2d1a7caf4be19b6ec9commit | diff
Don't bother with redoing rw_verify_area() from default_file_splice_from()

default_file_splice_from() ends up calling vfs_write() (via very convoluted
callchain).  It's an overkill, since we already have done rw_verify_area()
in the caller by the time we call vfs_write() we are under set_fs(KERNEL_DS),
so access_ok() is also pointless.  Add a new helper (__kernel_write()),
use it instead of kernel_write() in there.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/internal.h diff | blob | blame | history
fs/read_write.c diff | blob | blame | history
fs/splice.c diff | blob | blame | history