| commit | 91270162bf8a86bee756da7e931591d9953cb5a8 | |
| author | Tejun Heo <tj@kernel.org> | |
| Tue, 1 Oct 2013 21:42:03 +0000 (1 17:42 -0400) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Sun, 6 Oct 2013 00:27:40 +0000 (5 17:27 -0700) | ||
| tree | 086f17394395fdaadd0ddbc3761a3115c9c032c2 | treesnapshot (tar.gz zip) |
| parent | 13c589d5b0ac654d9da7e490a2dd548e6b86b4a5 | commitdiff |
sysfs: skip bin_buffer->buffer while reading
After b31ca3f5dfc ("sysfs: fix deadlock"), bin read() first writes
data to bb->buffer and bounces it to a transient kernel buffer which
is then copied out to userland. The double bouncing doesn't add
anything. Let's just use the transient buffer directly.
While at it, rename @temp to @buf for clarity.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
After b31ca3f5dfc ("sysfs: fix deadlock"), bin read() first writes
data to bb->buffer and bounces it to a transient kernel buffer which
is then copied out to userland. The double bouncing doesn't add
anything. Let's just use the transient buffer directly.
While at it, rename @temp to @buf for clarity.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| fs/sysfs/bin.c | diffblobblamehistory |