diff options
Diffstat (limited to 'Documentation/vm/zswap.txt')
| -rw-r--r-- | Documentation/vm/zswap.txt | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/Documentation/vm/zswap.txt b/Documentation/vm/zswap.txt index 7e492d8aaea..00c3d31e797 100644 --- a/Documentation/vm/zswap.txt +++ b/Documentation/vm/zswap.txt @@ -8,7 +8,7 @@ significant performance improvement if reads from the compressed cache are faster than reads from a swap device. NOTE: Zswap is a new feature as of v3.11 and interacts heavily with memory -reclaim. This interaction has not be fully explored on the large set of +reclaim. This interaction has not been fully explored on the large set of potential configurations and workloads that exist. For this reason, zswap is a work in progress and should be considered experimental. @@ -23,7 +23,7 @@ Some potential benefits: drastically reducing life-shortening writes. Zswap evicts pages from compressed cache on an LRU basis to the backing swap -device when the compressed pool reaches it size limit. This requirement had +device when the compressed pool reaches its size limit. This requirement had been identified in prior community discussions. To enabled zswap, the "enabled" attribute must be set to 1 at boot time. e.g. @@ -37,7 +37,7 @@ the backing swap device in the case that the compressed pool is full. Zswap makes use of zbud for the managing the compressed memory pool. Each allocation in zbud is not directly accessible by address. Rather, a handle is -return by the allocation routine and that handle must be mapped before being +returned by the allocation routine and that handle must be mapped before being accessed. The compressed memory pool grows on demand and shrinks as compressed pages are freed. The pool is not preallocated. @@ -56,7 +56,7 @@ in the swap_map goes to 0) the swap code calls the zswap invalidate function, via frontswap, to free the compressed entry. Zswap seeks to be simple in its policies. Sysfs attributes allow for one user -controlled policies: +controlled policy: * max_pool_percent - The maximum percentage of memory that the compressed pool can occupy. |