tree eb01278af88b386a56fee12ced51cb1764d70aaa
parent 6718b6f855a0b4962d54bd625be2718cb820cec6
author David Howells <dhowells@redhat.com> 1569337744 +0100
committer David Howells <dhowells@redhat.com> 1573834974 +0000

pipe: Advance tail pointer inside of wait spinlock in pipe_read()

Advance the pipe ring tail pointer inside of wait spinlock in pipe_read()
so that the pipe can be written into with kernel notifications from
contexts where pipe->mutex cannot be taken.

Signed-off-by: David Howells <dhowells@redhat.com>