LU-3832 clio: honor O_NOATIME

[fs/lustre-release.git] / lustre / llite / file.c

diff --git a/lustre/llite/file.c b/lustre/llite/file.c
index 6d94033..0179dd0 100644 (file)
--- a/lustre/llite/file.c
+++ b/lustre/llite/file.c
@@ -1055,6 +1055,33 @@ int ll_glimpse_ioctl(struct ll_sb_info *sbi, struct lov_stripe_md *lsm,
         return rc;
 }
 
+static bool file_is_noatime(const struct file *file)
+{
+       const struct vfsmount *mnt = file->f_path.mnt;
+       const struct inode *inode = file->f_path.dentry->d_inode;
+
+       /* Adapted from file_accessed() and touch_atime().*/
+       if (file->f_flags & O_NOATIME)
+               return true;
+
+       if (inode->i_flags & S_NOATIME)
+               return true;
+
+       if (IS_NOATIME(inode))
+               return true;
+
+       if (mnt->mnt_flags & (MNT_NOATIME | MNT_READONLY))
+               return true;
+
+       if ((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode))
+               return true;
+
+       if ((inode->i_sb->s_flags & MS_NODIRATIME) && S_ISDIR(inode->i_mode))
+               return true;
+
+       return false;
+}
+
 void ll_io_init(struct cl_io *io, const struct file *file, int write)
 {
         struct inode *inode = file->f_dentry->d_inode;
@@ -1074,6 +1101,8 @@ void ll_io_init(struct cl_io *io, const struct file *file, int write)
         } else if (file->f_flags & O_APPEND) {
                 io->ci_lockreq = CILR_MANDATORY;
         }
+
+       io->ci_noatime = file_is_noatime(file);
 }
 
 static ssize_t