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authorAmir Goldstein <amir73il@gmail.com>2021-01-06 10:52:35 +0300
committerChuck Lever <chuck.lever@oracle.com>2021-01-25 17:36:27 +0300
commite567b98ce9a4b35b63c364d24828a9e5cd7a8179 (patch)
tree7c59a1e119f6e11cb195a08d7fe055857186194f /fs/nfsd/vfs.c
parent1b76d1df1a3683b6b23cd1c813d13c5e6a9d35e5 (diff)
downloadlinux-e567b98ce9a4b35b63c364d24828a9e5cd7a8179.tar.xz
nfsd: protect concurrent access to nfsd stats counters
nfsd stats counters can be updated by concurrent nfsd threads without any protection. Convert some nfsd_stats and nfsd_net struct members to use percpu counters. The longest_chain* members of struct nfsd_net remain unprotected. Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd/vfs.c')
-rw-r--r--fs/nfsd/vfs.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 04937e51de56..d560c1bb2ec2 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -889,7 +889,7 @@ static __be32 nfsd_finish_read(struct svc_rqst *rqstp, struct svc_fh *fhp,
unsigned long *count, u32 *eof, ssize_t host_err)
{
if (host_err >= 0) {
- nfsdstats.io_read += host_err;
+ nfsd_stats_io_read_add(host_err);
*eof = nfsd_eof_on_read(file, offset, host_err, *count);
*count = host_err;
fsnotify_access(file);
@@ -1040,7 +1040,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct nfsd_file *nf,
goto out_nfserr;
}
*cnt = host_err;
- nfsdstats.io_write += *cnt;
+ nfsd_stats_io_write_add(*cnt);
fsnotify_modify(file);
if (stable && use_wgather) {