kernel/linux.git/mm/zbud.c, branch v4.14.31

mm/zbud.c: use list_last_entry() instead of list_tail_entry()

2016-01-15T19:40:52+00:00

list_last_entry*( has been defined in list.h, so replace list_tail_entry() with it. Signed-off-by: Geliang Tang Cc: Seth Jennings Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm: zsmalloc: constify struct zs_pool name

2015-11-07T01:50:42+00:00

Constify `struct zs_pool' ->name. [akpm@inux-foundation.org: constify zpool_create_pool()'s `type' arg also] Signed-off-by: Sergey Senozhatsky Acked-by: Dan Streetman Cc: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm: zbud: constify the zbud_ops

2015-09-08T22:35:28+00:00

The structure zbud_ops is not modified so make the pointer to it a pointer to const. Signed-off-by: Krzysztof Kozlowski Acked-by: Dan Streetman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm: zpool: constify the zpool_ops

2015-09-08T22:35:28+00:00

The structure zpool_ops is not modified so make the pointer to it a pointer to const. Signed-off-by: Krzysztof Kozlowski Acked-by: Dan Streetman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

zpool: remove zpool_evict()

2015-06-26T00:00:37+00:00

Remove zpool_evict() helper function. As zbud is currently the only zpool implementation that supports eviction, add zpool and zpool_ops references to struct zbud_pool and directly call zpool_ops->evict(zpool, handle) on eviction. Currently zpool provides the zpool_evict helper which locks the zpool list lock and searches through all pools to find the specific one matching the caller, and call the corresponding zpool_ops->evict function. However, this is unnecessary, as the zbud pool can simply keep a reference to the zpool that created it, as well as the zpool_ops, and directly call the zpool_ops->evict function, when it needs to evict a page. This avoids a spinlock and list search in zpool for each eviction. Signed-off-by: Dan Streetman Cc: Seth Jennings Cc: Minchan Kim Cc: Nitin Gupta Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm/zpool: add name argument to create zpool

2015-02-13T02:54:12+00:00

Currently the underlay of zpool: zsmalloc/zbud, do not know who creates them. There is not a method to let zsmalloc/zbud find which caller they belong to. Now we want to add statistics collection in zsmalloc. We need to name the debugfs dir for each pool created. The way suggested by Minchan Kim is to use a name passed by caller(such as zram) to create the zsmalloc pool. /sys/kernel/debug/zsmalloc/zram0 This patch adds an argument `name' to zs_create_pool() and other related functions. Signed-off-by: Ganesh Mahendran Acked-by: Minchan Kim Cc: Seth Jennings Cc: Nitin Gupta Cc: Dan Streetman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm/zbud: init user ops only when it is needed

2014-12-13T20:42:51+00:00

When zbud is initialized through the zpool wrapper, pool->ops which points to user-defined operations is always set regardless of whether it is specified from the upper layer. This causes zbud_reclaim_page() to iterate its loop for evicting pool pages out without any gain. This patch sets the user-defined ops only when it is needed, so that zbud_reclaim_page() can bail out the reclamation loop earlier if there is no user-defined operations specified. Signed-off-by: Heesub Shin Acked-by: Dan Streetman Cc: Seth Jennings Cc: Sunae Seo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge Linus' tree to be be to apply submitted patches to newer code than

2014-11-20T13:42:02+00:00

current trivial.git base

zbud, zswap: change module author email

2014-11-13T08:05:47+00:00

Old email no longer viable. Signed-off-by: Seth Jennings Signed-off-by: Jiri Kosina

zbud: avoid accessing last unused freelist

2014-10-10T02:26:03+00:00

For now, there are NCHUNKS of 64 freelists in zbud_pool, the last unbuddied[63] freelist linked with all zbud pages which have free chunks of 63. Calculating according to context of num_free_chunks(), our max chunk number of unbuddied zbud page is 62, so none of zbud pages will be added/removed in last freelist, but still we will try to find an unbuddied zbud page in the last unused freelist, it is unneeded. This patch redefines NCHUNKS to 63 as free chunk number in one zbud page, hence we can decrease size of zpool and avoid accessing the last unused freelist whenever failing to allocate zbud from freelist in zbud_alloc. Signed-off-by: Chao Yu Cc: Seth Jennings Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds