From 651b0e702981304f77091b82870a01480705f4fe Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 25 Jun 2016 17:24:46 -0400 Subject: NFS: Do not aggressively cache file attributes in the case of O_DIRECT A file that is open for O_DIRECT is by definition not obeying close-to-open cache consistency semantics, so let's not cache the attributes too aggressively either. Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'fs/nfs/internal.h') diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 159b64ede82a..01dccf18da0a 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -419,6 +419,11 @@ extern void nfs_end_io_write(struct inode *inode); extern void nfs_start_io_direct(struct inode *inode); extern void nfs_end_io_direct(struct inode *inode); +static inline bool nfs_file_io_is_buffered(struct nfs_inode *nfsi) +{ + return test_bit(NFS_INO_ODIRECT, &nfsi->flags) == 0; +} + /* namespace.c */ #define NFS_PATH_CANONICAL 1 extern char *nfs_path(char **p, struct dentry *dentry, -- cgit v1.2.3