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| author |   Johannes Weiner <hannes@cmpxchg.org> | 2021-09-02 14:53:24 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-03 09:58:10 -0700 |
| commit | 7ae12c809f6a31d3da7b96339dbefa141884c711 (patch) | |
| tree | 3e81f69167458f191854eeb7c87a5310972668c7 /fs/inode.c | |
| parent | fs: drop_caches: fix skipping over shadow cache inodes (diff) | |
| download | linux-dev-7ae12c809f6a31d3da7b96339dbefa141884c711.tar.xz linux-dev-7ae12c809f6a31d3da7b96339dbefa141884c711.zip | |
fs: inode: count invalidated shadow pages in pginodesteal
pginodesteal is supposed to capture the impact that inode reclaim has on
the page cache state. Currently, it doesn't consider shadow pages that
get dropped this way, even though this can have a significant impact on
paging behavior, memory pressure calculations etc.
To improve visibility into these effects, make sure shadow pages get
counted when they get dropped through inode reclaim.
This changes the return value semantics of invalidate_mapping_pages()
semantics slightly, but the only two users are the inode shrinker itsel
and a usb driver that logs it for debugging purposes.
Link: https://lkml.kernel.org/r/20210614211904.14420-3-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/inode.c')
| -rw-r--r-- | fs/inode.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/inode.c b/fs/inode.c index c93500d84264..8830a727b0af 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -768,7 +768,7 @@ static enum lru_status inode_lru_isolate(struct list_head *item, return LRU_ROTATE; } - if (inode_has_buffers(inode) || inode->i_data.nrpages) { + if (inode_has_buffers(inode) || !mapping_empty(&inode->i_data)) { __iget(inode); spin_unlock(&inode->i_lock); spin_unlock(lru_lock); |