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ramfs, hugetlbfs, mqueue: set DCACHE_DONTCACHE

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makes simple_lookup() slightly cheaper there - no need for
simple_lookup() to set the flag and we want it on everything
on those anyway.

Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2025-02-23 22:14:47 -05:00
parent 0b136e7d18
commit 3333ed35b8
3 changed files with 3 additions and 0 deletions
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1
fs/hugetlbfs/inode.c
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@ -1433,6 +1433,7 @@ hugetlbfs_fill_super(struct super_block *sb, struct fs_context *fc)
sb->s_blocksize_bits = huge_page_shift(ctx->hstate);
sb->s_magic = HUGETLBFS_MAGIC;
sb->s_op = &hugetlbfs_ops;
sb->s_d_flags = DCACHE_DONTCACHE;
sb->s_time_gran = 1;
/*

1
fs/ramfs/inode.c
View file

@ -269,6 +269,7 @@ static int ramfs_fill_super(struct super_block *sb, struct fs_context *fc)
sb->s_blocksize_bits = PAGE_SHIFT;
sb->s_magic = RAMFS_MAGIC;
sb->s_op = &ramfs_ops;
sb->s_d_flags = DCACHE_DONTCACHE;
sb->s_time_gran = 1;
inode = ramfs_get_inode(sb, NULL, S_IFDIR | fsi->mount_opts.mode, 0);

1
ipc/mqueue.c
View file

@ -411,6 +411,7 @@ static int mqueue_fill_super(struct super_block *sb, struct fs_context *fc)
sb->s_blocksize_bits = PAGE_SHIFT;
sb->s_magic = MQUEUE_MAGIC;
sb->s_op = &mqueue_super_ops;
sb->s_d_flags = DCACHE_DONTCACHE;
inode = mqueue_get_inode(sb, ns, S_IFDIR | S_ISVTX | S_IRWXUGO, NULL);
if (IS_ERR(inode))