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-rw-r--r--include/my_sys.h9
1 files changed, 5 insertions, 4 deletions
diff --git a/include/my_sys.h b/include/my_sys.h
index 60f5613eec1..70dc12cc28f 100644
--- a/include/my_sys.h
+++ b/include/my_sys.h
@@ -480,18 +480,19 @@ typedef struct st_io_cache /* Used when caching files */
partial.
*/
int seek_not_done,error;
- /* buffer_length is memory size allocated for buffer or write_buffer */
+ /* length of the buffer used for storing un-encrypted data */
size_t buffer_length;
/* read_length is the same as buffer_length except when we use async io */
size_t read_length;
myf myflags; /* Flags used to my_read/my_write */
/*
- alloced_buffer is 1 if the buffer was allocated by init_io_cache() and
- 0 if it was supplied by the user.
+ alloced_buffer is set to the size of the buffer allocated for the IO_CACHE.
+ Includes the overhead(storing key to ecnrypt and decrypt) for encryption.
+ Set to 0 if nothing is allocated.
Currently READ_NET is the only one that will use a buffer allocated
somewhere else
*/
- my_bool alloced_buffer;
+ size_t alloced_buffer;
#ifdef HAVE_AIOWAIT
/*
As inidicated by ifdef, this is for async I/O, which is not currently