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authorSergey Senozhatsky <senozhatsky@chromium.org>2023-11-15 05:42:12 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-12-11 03:51:40 +0300
commita7a0350583ba51d8cde6180bb51d704b89a3b29e (patch)
treebed2a38e17a2e1c3f78e97efe5273dd02be4c079 /Documentation/admin-guide/blockdev
parent1b5c65b64cd417c801945b26a2a50c4d4eefaec8 (diff)
downloadlinux-a7a0350583ba51d8cde6180bb51d704b89a3b29e.tar.xz
zram: split memory-tracking and ac-time tracking
ZRAM_MEMORY_TRACKING enables two features: - per-entry ac-time tracking - debugfs interface The latter one is the reason why memory-tracking depends on DEBUG_FS, while the former one is used far beyond debugging these days. Namely ac-time is used for fine grained writeback of idle entries (pages). Move ac-time tracking under its own config option so that it can be enabled (along with writeback) on systems without DEBUG_FS. [senozhatsky@chromium.org: ifdef fixup, per Dmytro] Link: https://lkml.kernel.org/r/20231117013543.540280-1-senozhatsky@chromium.org Link: https://lkml.kernel.org/r/20231115024223.4133148-1-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Dmytro Maluka <dmaluka@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/admin-guide/blockdev')
-rw-r--r--Documentation/admin-guide/blockdev/zram.rst2
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/admin-guide/blockdev/zram.rst b/Documentation/admin-guide/blockdev/zram.rst
index e4551579cb12..ee2b0030d416 100644
--- a/Documentation/admin-guide/blockdev/zram.rst
+++ b/Documentation/admin-guide/blockdev/zram.rst
@@ -328,7 +328,7 @@ as idle::
From now on, any pages on zram are idle pages. The idle mark
will be removed until someone requests access of the block.
IOW, unless there is access request, those pages are still idle pages.
-Additionally, when CONFIG_ZRAM_MEMORY_TRACKING is enabled pages can be
+Additionally, when CONFIG_ZRAM_TRACK_ENTRY_ACTIME is enabled pages can be
marked as idle based on how long (in seconds) it's been since they were
last accessed::