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authorTrond Myklebust <trond.myklebust@hammerspace.com>2020-02-08 09:14:11 -0500
committerTrond Myklebust <trond.myklebust@hammerspace.com>2020-03-16 08:34:29 -0400
commita8b373eefc82094ba84bf35a770cdb21196224e4 (patch)
treeca983a1a3652133a2bb35a34e9eefb05f8c824b4 /fs
parent49cd32543fa68889111c66c79cc0a6ed2ec02019 (diff)
downloadlinux-a8b373eefc82094ba84bf35a770cdb21196224e4.tar.bz2
NFS: Limit the size of the access cache by default
Currently, we have no real limit on the access cache size (we set it to ULONG_MAX). That can lead to credentials getting pinned for a very long time on lots of files if you have a system with a lot of memory. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/dir.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 5e23855e8097..f22366f350a9 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -2309,7 +2309,7 @@ static DEFINE_SPINLOCK(nfs_access_lru_lock);
static LIST_HEAD(nfs_access_lru_list);
static atomic_long_t nfs_access_nr_entries;
-static unsigned long nfs_access_max_cachesize = ULONG_MAX;
+static unsigned long nfs_access_max_cachesize = 4*1024*1024;
module_param(nfs_access_max_cachesize, ulong, 0644);
MODULE_PARM_DESC(nfs_access_max_cachesize, "NFS access maximum total cache length");