Messages in this thread | | | Date | Wed, 29 Aug 2018 15:18:15 +0200 | From | Jan Kara <> | Subject | Re: [PATCH 1/5] ext2: cache NULL when both default_acl and acl are NULL |
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On Tue 14-08-18 22:16:30, Chengguang Xu wrote: > default_acl and acl of newly created inode will be initiated > as ACL_NOT_CACHED in vfs function inode_init_always() and later > will be updated by calling xxx_init_acl() in specific filesystems. > Howerver, when default_acl and acl are NULL then they keep the value > of ACL_NOT_CACHED, this patch tries to cache NULL for acl/default_acl > in this case. > > Signed-off-by: Chengguang Xu <cgxu519@gmx.com> > --- > fs/ext2/acl.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c > index 224c04abb2e5..74411e8ea507 100644 > --- a/fs/ext2/acl.c > +++ b/fs/ext2/acl.c > @@ -262,5 +262,8 @@ ext2_init_acl(struct inode *inode, struct inode *dir) > error = __ext2_set_acl(inode, acl, ACL_TYPE_ACCESS); > posix_acl_release(acl); > } > + if (!default_acl && !acl) > + cache_no_acl(inode); > +
Thanks for the patch. I'd somewhat prefer something equivalent to:
if (!acl) inode->i_acl = NULL; if (!default_acl) inode->i_default_acl = NULL;
given the code in ext2_init_acl(). It would be most natural like:
if (default_acl) { do foo } else { inode->i_default_acl = NULL; }
And similarly for 'acl'.
Honza -- Jan Kara <jack@suse.com> SUSE Labs, CR
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