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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/ext2 | |
| parent | Merge tag 'erofs-for-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs (diff) | |
| parent | ovl: enable RCU'd ->get_acl() (diff) | |
| download | linux-dev-815409a12c0a9c0de17a910fd95fe11e1eb97f32.tar.xz linux-dev-815409a12c0a9c0de17a910fd95fe11e1eb97f32.zip | |
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/ext2')
| -rw-r--r-- | fs/ext2/acl.c | 5 | ||||
| -rw-r--r-- | fs/ext2/acl.h | 2 |
2 files changed, 5 insertions, 2 deletions
diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c index b9a9db98e94b..bf298967c5b8 100644 --- a/fs/ext2/acl.c +++ b/fs/ext2/acl.c @@ -141,13 +141,16 @@ fail: * inode->i_mutex: don't care */ struct posix_acl * -ext2_get_acl(struct inode *inode, int type) +ext2_get_acl(struct inode *inode, int type, bool rcu) { int name_index; char *value = NULL; struct posix_acl *acl; int retval; + if (rcu) + return ERR_PTR(-ECHILD); + switch (type) { case ACL_TYPE_ACCESS: name_index = EXT2_XATTR_INDEX_POSIX_ACL_ACCESS; diff --git a/fs/ext2/acl.h b/fs/ext2/acl.h index 917db5f6630a..925ab6287d35 100644 --- a/fs/ext2/acl.h +++ b/fs/ext2/acl.h @@ -55,7 +55,7 @@ static inline int ext2_acl_count(size_t size) #ifdef CONFIG_EXT2_FS_POSIX_ACL /* acl.c */ -extern struct posix_acl *ext2_get_acl(struct inode *inode, int type); +extern struct posix_acl *ext2_get_acl(struct inode *inode, int type, bool rcu); extern int ext2_set_acl(struct user_namespace *mnt_userns, struct inode *inode, struct posix_acl *acl, int type); extern int ext2_init_acl (struct inode *, struct inode *); |