Just set DCACHE_DONTCACHE in ->s_d_flags and be done with that.
Dentries there live for as long as they are pinned; once the
refcount hits zero, that's it. The same, of course, goes for
other tree-in-dcache filesystems - more in the next commits...
Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
---
mm/shmem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/shmem.c b/mm/shmem.c
index 0ecb49113bb2..dd84b1c554a8 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -4971,7 +4971,6 @@ static void shmem_put_super(struct super_block *sb)
static const struct dentry_operations shmem_ci_dentry_ops = {
.d_hash = generic_ci_d_hash,
.d_compare = generic_ci_d_compare,
- .d_delete = always_delete_dentry,
};
#endif
@@ -5028,6 +5027,7 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
#else
sb->s_flags |= SB_NOUSER;
#endif /* CONFIG_TMPFS */
+ sb->s_d_flags |= DCACHE_DONTCACHE;
sbinfo->max_blocks = ctx->blocks;
sbinfo->max_inodes = ctx->inodes;
sbinfo->free_ispace = sbinfo->max_inodes * BOGO_INODE_SIZE;
--
2.39.5
