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authorChristoph Hellwig <hch@lst.de>2022-01-21 22:15:10 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2022-01-22 08:33:38 +0200
commit1da0d94a3ec8c5f3793b7be8538b55e60ebeefe3 (patch)
treea2bbcb8160a67bc1ffb709fcb9d37be7849f1912 /mm/zswap.c
parent633423a09cb5cfe61438283e1ce49c23cf4a0611 (diff)
frontswap: remove support for multiple ops
There is only a single instance of frontswap ops in the kernel, so simplify the frontswap code by removing support for multiple operations. Link: https://lkml.kernel.org/r/20211224062246.1258487-13-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Juergen Gross <jgross@suse.com> Cc: Dan Streetman <ddstreet@ieee.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Hugh Dickins <hughd@google.com> Cc: Konrad Rzeszutek Wilk <Konrad.wilk@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Seth Jennings <sjenning@redhat.com> Cc: Vitaly Wool <vitaly.wool@konsulko.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/zswap.c')
-rw-r--r--mm/zswap.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/mm/zswap.c b/mm/zswap.c
index 7944e3e57e78..cdf6950fcb2e 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -1378,7 +1378,7 @@ static void zswap_frontswap_init(unsigned type)
zswap_trees[type] = tree;
}
-static struct frontswap_ops zswap_frontswap_ops = {
+static const struct frontswap_ops zswap_frontswap_ops = {
.store = zswap_frontswap_store,
.load = zswap_frontswap_load,
.invalidate_page = zswap_frontswap_invalidate_page,
@@ -1475,11 +1475,15 @@ static int __init init_zswap(void)
if (!shrink_wq)
goto fallback_fail;
- frontswap_register_ops(&zswap_frontswap_ops);
+ ret = frontswap_register_ops(&zswap_frontswap_ops);
+ if (ret)
+ goto destroy_wq;
if (zswap_debugfs_init())
pr_warn("debugfs initialization failed\n");
return 0;
+destroy_wq:
+ destroy_workqueue(shrink_wq);
fallback_fail:
if (pool)
zswap_pool_destroy(pool);