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branches/zip: Note that b (the newly created control block for the

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compressed page) is not protected by block_mutex.  Before releasing
buf_pool->mutex, we can simply assign b->io_fix.  After reacquiring
buf_pool->mutex, we also have to acquire buf_pool->zip_mutex.
This commit is contained in:
marko 2007-01-16 16:39:53 +00:00
parent 9fe82e80e3
commit 94e49a71b2
1 changed files with 3 additions and 1 deletions
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4
buf/buf0lru.c
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@ -998,7 +998,7 @@ buf_LRU_free_block(
decompressing the block while we release
buf_pool->mutex and block_mutex. */
b->buf_fix_count++;
buf_page_set_io_fix(b, BUF_IO_READ);
b->io_fix = BUF_IO_READ;
}
mutex_exit(&buf_pool->mutex);
@ -1037,8 +1037,10 @@ buf_LRU_free_block(
mutex_enter(block_mutex);
if (b) {
mutex_enter(&buf_pool->zip_mutex);
b->buf_fix_count--;
buf_page_set_io_fix(b, BUF_IO_NONE);
mutex_exit(&buf_pool->zip_mutex);
}
buf_LRU_block_free_hashed_page((buf_block_t*) bpage);