diff options
Diffstat (limited to 'src/include/storage/buf_internals.h')
| -rw-r--r-- | src/include/storage/buf_internals.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/include/storage/buf_internals.h b/src/include/storage/buf_internals.h index 33fcaf5c9a8..7c6653311a5 100644 --- a/src/include/storage/buf_internals.h +++ b/src/include/storage/buf_internals.h @@ -136,7 +136,7 @@ typedef struct buftag * BufferDesc -- shared descriptor/state data for a single shared buffer. * * Note: Buffer header lock (BM_LOCKED flag) must be held to examine or change - * the tag, state or wait_backend_pid fields. In general, buffer header lock + * tag, state or wait_backend_pgprocno fields. In general, buffer header lock * is a spinlock which is combined with flags, refcount and usagecount into * single atomic variable. This layout allow us to do some operations in a * single atomic operation, without actually acquiring and releasing spinlock; @@ -161,8 +161,8 @@ typedef struct buftag * * We can't physically remove items from a disk page if another backend has * the buffer pinned. Hence, a backend may need to wait for all other pins - * to go away. This is signaled by storing its own PID into - * wait_backend_pid and setting flag bit BM_PIN_COUNT_WAITER. At present, + * to go away. This is signaled by storing its own pgprocno into + * wait_backend_pgprocno and setting flag bit BM_PIN_COUNT_WAITER. At present, * there can be only one such waiter per buffer. * * We use this same struct for local buffer headers, but the locks are not @@ -187,7 +187,7 @@ typedef struct BufferDesc /* state of the tag, containing flags, refcount and usagecount */ pg_atomic_uint32 state; - int wait_backend_pid; /* backend PID of pin-count waiter */ + int wait_backend_pgprocno; /* backend of pin-count waiter */ int freeNext; /* link in freelist chain */ LWLock content_lock; /* to lock access to buffer contents */ } BufferDesc; |