commit fa5eee57e33e79b71b40e6950c29cc46f5cc5cb7
author Miklos Szeredi <mszeredi@redhat.com> Fri Oct 22 17:03:02 2021 +0200
committer Miklos Szeredi <mszeredi@redhat.com> Thu Oct 28 09:45:32 2021 +0200
tree 92ed8a392c657de447ef8eb8c3a5f7fc72140542
parent 97f044f690bac2b094bfb7fb2d177ef946c85880

fuse: selective attribute invalidation

Only invalidate attributes that the operation might have changed.

Introduce two constants for common combinations of changed attributes:

  FUSE_STATX_MODIFY: file contents are modified but not size

  FUSE_STATX_MODSIZE: size and/or file contents modified

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

fs/fuse/fuse_i.h

diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index a59e36c..4f2f658 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -1065,7 +1065,15 @@ void fuse_wait_aborted(struct fuse_conn *fc);
 /**
  * Invalidate inode attributes
  */
+
+/* Attributes possibly changed on data modification */
+#define FUSE_STATX_MODIFY	(STATX_MTIME | STATX_CTIME | STATX_BLOCKS)
+
+/* Attributes possibly changed on data and/or size modification */
+#define FUSE_STATX_MODSIZE	(FUSE_STATX_MODIFY | STATX_SIZE)
+
 void fuse_invalidate_attr(struct inode *inode);
+void fuse_invalidate_attr_mask(struct inode *inode, u32 mask);
 
 void fuse_invalidate_entry_cache(struct dentry *entry);