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authorChuck Lever <cel@netapp.com>2006-03-20 13:44:14 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-03-20 13:44:14 -0500
commit91d5b47023b608227d605d1e916b29dd0215bff7 (patch)
tree31dbb285639ea68db3abc0c4129988f02d50f11a /fs/nfs/inode.c
parentd9ef5a8c26aab09762afce43df64736720b4860e (diff)
NFS: add I/O performance counters
Invoke the byte and event counter macros where we want to count bytes and events. Clean-up: fix a possible NULL dereference in nfs_lock, and simplify nfs_file_open. Test-plan: fsx and iozone on UP and SMP systems, with and without pre-emption. Watch for memory overwrite bugs, and performance loss (significantly more CPU required per op). Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/inode.c')
-rw-r--r--fs/nfs/inode.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 86b756f44e27..8ee74111e519 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -753,6 +753,8 @@ static void nfs_zap_caches_locked(struct inode *inode)
struct nfs_inode *nfsi = NFS_I(inode);
int mode = inode->i_mode;
+ nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE);
+
NFS_ATTRTIMEO(inode) = NFS_MINATTRTIMEO(inode);
NFS_ATTRTIMEO_UPDATE(inode) = jiffies;
@@ -940,6 +942,8 @@ nfs_setattr(struct dentry *dentry, struct iattr *attr)
struct nfs_fattr fattr;
int error;
+ nfs_inc_stats(inode, NFSIOS_VFSSETATTR);
+
if (attr->ia_valid & ATTR_SIZE) {
if (!S_ISREG(inode->i_mode) || attr->ia_size == i_size_read(inode))
attr->ia_valid &= ~ATTR_SIZE;
@@ -993,6 +997,7 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr)
spin_unlock(&inode->i_lock);
}
if ((attr->ia_valid & ATTR_SIZE) != 0) {
+ nfs_inc_stats(inode, NFSIOS_SETATTRTRUNC);
inode->i_size = attr->ia_size;
vmtruncate(inode, attr->ia_size);
}
@@ -1278,6 +1283,7 @@ int nfs_attribute_timeout(struct inode *inode)
*/
int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
{
+ nfs_inc_stats(inode, NFSIOS_INODEREVALIDATE);
if (!(NFS_I(inode)->cache_validity & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA))
&& !nfs_attribute_timeout(inode))
return NFS_STALE(inode) ? -ESTALE : 0;
@@ -1294,6 +1300,7 @@ void nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping)
struct nfs_inode *nfsi = NFS_I(inode);
if (nfsi->cache_validity & NFS_INO_INVALID_DATA) {
+ nfs_inc_stats(inode, NFSIOS_DATAINVALIDATE);
if (S_ISREG(inode->i_mode))
nfs_sync_mapping(mapping);
invalidate_inode_pages2(mapping);
@@ -1615,6 +1622,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
/* Update attrtimeo value if we're out of the unstable period */
if (invalid & NFS_INO_INVALID_ATTR) {
+ nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE);
nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
nfsi->attrtimeo_timestamp = jiffies;
} else if (time_after(jiffies, nfsi->attrtimeo_timestamp+nfsi->attrtimeo)) {