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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-02 09:21:27 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-02 09:21:27 -0700 |
| commit | 815409a12c0a9c0de17a910fd95fe11e1eb97f32 (patch) | |
| tree | f3693cf3f7b261638a5234427c13b636120dd776 /fs/nfs | |
| parent | 412106c203b759fa7fbcc4f855a90ab18e681ccb (diff) | |
| parent | 332f606b32b6291a944c8cf23b91f53a6e676525 (diff) | |
Merge tag 'ovl-update-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull overlayfs update from Miklos Szeredi:
- Copy up immutable/append/sync/noatime attributes (Amir Goldstein)
- Improve performance by enabling RCU lookup.
- Misc fixes and improvements
The reason this touches so many files is that the ->get_acl() method now
gets a "bool rcu" argument. The ->get_acl() API was updated based on
comments from Al and Linus:
Link: https://lore.kernel.org/linux-fsdevel/CAJfpeguQxpd6Wgc0Jd3ks77zcsAv_bn0q17L3VNnnmPKu11t8A@mail.gmail.com/
* tag 'ovl-update-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: enable RCU'd ->get_acl()
vfs: add rcu argument to ->get_acl() callback
ovl: fix BUG_ON() in may_delete() when called from ovl_cleanup()
ovl: use kvalloc in xattr copy-up
ovl: update ctime when changing fileattr
ovl: skip checking lower file's i_writecount on truncate
ovl: relax lookup error on mismatch origin ftype
ovl: do not set overlay.opaque for new directories
ovl: add ovl_allow_offline_changes() helper
ovl: disable decoding null uuid with redirect_dir
ovl: consistent behavior for immutable/append-only inodes
ovl: copy up sync/noatime fileattr flags
ovl: pass ovl_fs to ovl_check_setxattr()
fs: add generic helper for filling statx attribute flags
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/nfs3_fs.h | 2 | ||||
| -rw-r--r-- | fs/nfs/nfs3acl.c | 5 |
2 files changed, 5 insertions, 2 deletions
diff --git a/fs/nfs/nfs3_fs.h b/fs/nfs/nfs3_fs.h index c8a192802dda..03a4e679fd99 100644 --- a/fs/nfs/nfs3_fs.h +++ b/fs/nfs/nfs3_fs.h @@ -11,7 +11,7 @@ * nfs3acl.c */ #ifdef CONFIG_NFS_V3_ACL -extern struct posix_acl *nfs3_get_acl(struct inode *inode, int type); +extern struct posix_acl *nfs3_get_acl(struct inode *inode, int type, bool rcu); extern int nfs3_set_acl(struct user_namespace *mnt_userns, struct inode *inode, struct posix_acl *acl, int type); extern int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl, diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c index 9ec560aa4a50..93de0b58647a 100644 --- a/fs/nfs/nfs3acl.c +++ b/fs/nfs/nfs3acl.c @@ -44,7 +44,7 @@ static void nfs3_abort_get_acl(struct posix_acl **p) cmpxchg(p, sentinel, ACL_NOT_CACHED); } -struct posix_acl *nfs3_get_acl(struct inode *inode, int type) +struct posix_acl *nfs3_get_acl(struct inode *inode, int type, bool rcu) { struct nfs_server *server = NFS_SERVER(inode); struct page *pages[NFSACL_MAXPAGES] = { }; @@ -62,6 +62,9 @@ struct posix_acl *nfs3_get_acl(struct inode *inode, int type) }; int status, count; + if (rcu) + return ERR_PTR(-ECHILD); + if (!nfs_server_capable(inode, NFS_CAP_ACLS)) return ERR_PTR(-EOPNOTSUPP); |