fs/9p: fix dups even in uncached mode

In uncached mode we were still seeing duplicate getattr requests because of aggressive dropping of inodes. Inode "freshness" is guarded by other mechanisms when caches are disabled so this is unnecessary and increases overhead of almost every operation. Signed-off-by: Eric Van Hensbergen <[email protected]>
koverstreet · Jan 26, 2024 · be57855 · be57855
1 parent 724a084
commit be57855
Showing 1 changed file with 0 additions and 16 deletions.
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
@@ -244,21 +244,6 @@ static int v9fs_statfs(struct dentry *dentry, struct kstatfs *buf)
 	return res;
 }
 
-static int v9fs_drop_inode(struct inode *inode)
-{
-	struct v9fs_session_info *v9ses;
-
-	v9ses = v9fs_inode2v9ses(inode);
-	if (v9ses->cache & (CACHE_META|CACHE_LOOSE))
-		return generic_drop_inode(inode);
-	/*
-	 * in case of non cached mode always drop the
-	 * inode because we want the inode attribute
-	 * to always match that on the server.
-	 */
-	return 1;
-}
-
 static int v9fs_write_inode(struct inode *inode,
 			    struct writeback_control *wbc)
 {
@@ -293,7 +278,6 @@ static const struct super_operations v9fs_super_ops_dotl = {
 	.alloc_inode = v9fs_alloc_inode,
 	.free_inode = v9fs_free_inode,
 	.statfs = v9fs_statfs,
-	.drop_inode = v9fs_drop_inode,
 	.evict_inode = v9fs_evict_inode,
 	.show_options = v9fs_show_options,
 	.umount_begin = v9fs_umount_begin,