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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-01-17 22:04:26 -0500 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-01-31 19:28:07 -0500 |
| commit | 536e43d12b9517bbbf6114cd1a12be27857a4d7a (patch) | |
| tree | a40424a430fd651fe7b35232717f2201c608059a /fs/nfs/inode.c | |
| parent | 48c22eb21071a3524f8b6e587371be35b5e86969 (diff) | |
| download | op-kernel-dev-536e43d12b9517bbbf6114cd1a12be27857a4d7a.zip op-kernel-dev-536e43d12b9517bbbf6114cd1a12be27857a4d7a.tar.gz | |
NFS: Optimise away unnecessary setattrs for open(O_TRUNC);
Currently, we will correctly optimise away a truncate that doesn't
change the file size. However, in the case of open(O_TRUNC), we
also want to optimise away the time changes.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/inode.c')
| -rw-r--r-- | fs/nfs/inode.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 577ad5a..65486e6 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -402,7 +402,7 @@ out_no_inode: goto out; } -#define NFS_VALID_ATTRS (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_ATIME|ATTR_ATIME_SET|ATTR_MTIME|ATTR_MTIME_SET|ATTR_FILE) +#define NFS_VALID_ATTRS (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_ATIME|ATTR_ATIME_SET|ATTR_MTIME|ATTR_MTIME_SET|ATTR_FILE|ATTR_OPEN) int nfs_setattr(struct dentry *dentry, struct iattr *attr) @@ -424,7 +424,7 @@ nfs_setattr(struct dentry *dentry, struct iattr *attr) /* Optimization: if the end result is no change, don't RPC */ attr->ia_valid &= NFS_VALID_ATTRS; - if ((attr->ia_valid & ~ATTR_FILE) == 0) + if ((attr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) return 0; /* Write all dirty data */ |
