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authorTrond Myklebust <Trond.Myklebust@netapp.com>2007-02-05 14:44:22 -0800
committerTrond Myklebust <Trond.Myklebust@netapp.com>2007-02-12 22:40:30 -0800
commitb0c4fddca2bc3967381b728732a8850de35e1b20 (patch)
tree20c84b8927e448ab57f5536a4369e6f787ba316e
parent3e7d950a528454ad749a264feef3c8bad3faa108 (diff)
NFS: Cleanup - avoid rereading 'jiffies' more than once in the same routine
Micro-optimisations for nfs_fhget() and nfs_wcc_update_inode(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
-rw-r--r--fs/nfs/inode.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 93269c3dd0f..af53c02f473 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -240,6 +240,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
if (inode->i_state & I_NEW) {
struct nfs_inode *nfsi = NFS_I(inode);
+ unsigned long now = jiffies;
/* We set i_ino for the few things that still rely on it,
* such as stat(2) */
@@ -276,7 +277,8 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
init_special_inode(inode, inode->i_mode, fattr->rdev);
nfsi->read_cache_jiffies = fattr->time_start;
- nfsi->last_updated = jiffies;
+ nfsi->last_updated = now;
+ nfsi->cache_change_attribute = now;
inode->i_atime = fattr->atime;
inode->i_mtime = fattr->mtime;
inode->i_ctime = fattr->ctime;
@@ -295,7 +297,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
inode->i_blocks = fattr->du.nfs2.blocks;
}
nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
- nfsi->attrtimeo_timestamp = jiffies;
+ nfsi->attrtimeo_timestamp = now;
memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf));
nfsi->access_cache = RB_ROOT;
@@ -788,20 +790,21 @@ void nfs_end_data_update(struct inode *inode)
static void nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr *fattr)
{
struct nfs_inode *nfsi = NFS_I(inode);
+ unsigned long now = jiffies;
/* If we have atomic WCC data, we may update some attributes */
if ((fattr->valid & NFS_ATTR_WCC) != 0) {
if (timespec_equal(&inode->i_ctime, &fattr->pre_ctime)) {
memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime));
- nfsi->cache_change_attribute = jiffies;
+ nfsi->cache_change_attribute = now;
}
if (timespec_equal(&inode->i_mtime, &fattr->pre_mtime)) {
memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime));
- nfsi->cache_change_attribute = jiffies;
+ nfsi->cache_change_attribute = now;
}
if (inode->i_size == fattr->pre_size && nfsi->npages == 0) {
inode->i_size = fattr->size;
- nfsi->cache_change_attribute = jiffies;
+ nfsi->cache_change_attribute = now;
}
}
}
@@ -1132,7 +1135,6 @@ struct inode *nfs_alloc_inode(struct super_block *sb)
return NULL;
nfsi->flags = 0UL;
nfsi->cache_validity = 0UL;
- nfsi->cache_change_attribute = jiffies;
#ifdef CONFIG_NFS_V3_ACL
nfsi->acl_access = ERR_PTR(-EAGAIN);
nfsi->acl_default = ERR_PTR(-EAGAIN);