diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-08-14 14:58:01 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-14 14:58:01 +0200 |
| commit | 51ca3c679194e7435c25b8e77b0a73c597e41ae9 (patch) | |
| tree | a681dca369607ab0f371d5246b0f75140b860a8a /kernel/relay.c | |
| parent | b55793f7528ce1b73c25b3ac8a86a6cda2a0f9a4 (diff) | |
| parent | b635acec48bcaa9183fcbf4e3955616b0d4119b5 (diff) | |
Merge branch 'linus' into x86/core
Conflicts:
arch/x86/kernel/genapic_64.c
include/asm-x86/kvm_host.h
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/relay.c')
| -rw-r--r-- | kernel/relay.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/kernel/relay.c b/kernel/relay.c index 04006ef970b8..8d13a7855c08 100644 --- a/kernel/relay.c +++ b/kernel/relay.c @@ -944,6 +944,10 @@ static void relay_file_read_consume(struct rchan_buf *buf, size_t n_subbufs = buf->chan->n_subbufs; size_t read_subbuf; + if (buf->subbufs_produced == buf->subbufs_consumed && + buf->offset == buf->bytes_consumed) + return; + if (buf->bytes_consumed + bytes_consumed > subbuf_size) { relay_subbufs_consumed(buf->chan, buf->cpu, 1); buf->bytes_consumed = 0; @@ -975,6 +979,8 @@ static int relay_file_read_avail(struct rchan_buf *buf, size_t read_pos) relay_file_read_consume(buf, read_pos, 0); + consumed = buf->subbufs_consumed; + if (unlikely(buf->offset > subbuf_size)) { if (produced == consumed) return 0; @@ -993,8 +999,12 @@ static int relay_file_read_avail(struct rchan_buf *buf, size_t read_pos) if (consumed > produced) produced += n_subbufs * subbuf_size; - if (consumed == produced) + if (consumed == produced) { + if (buf->offset == subbuf_size && + buf->subbufs_produced > buf->subbufs_consumed) + return 1; return 0; + } return 1; } |