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authorLinus Torvalds <torvalds@linux-foundation.org>2018-08-22 04:19:09 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-08-22 04:19:09 +0300
commitd9a185f8b49678775ef56ecbdbc7b76970302897 (patch)
tree7ace1b26133e5d796af09e5d71d6531bcb69865c /include/linux/dcache.h
parentc22fc16d172fba4d19ffd8f2aa8fe67edba63895 (diff)
parent989974c804574d250ac92d44e220081959ac8ac1 (diff)
downloadlinux-d9a185f8b49678775ef56ecbdbc7b76970302897.tar.xz
Merge tag 'ovl-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull overlayfs updates from Miklos Szeredi: "This contains two new features: - Stack file operations: this allows removal of several hacks from the VFS, proper interaction of read-only open files with copy-up, possibility to implement fs modifying ioctls properly, and others. - Metadata only copy-up: when file is on lower layer and only metadata is modified (except size) then only copy up the metadata and continue to use the data from the lower file" * tag 'ovl-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: (66 commits) ovl: Enable metadata only feature ovl: Do not do metacopy only for ioctl modifying file attr ovl: Do not do metadata only copy-up for truncate operation ovl: add helper to force data copy-up ovl: Check redirect on index as well ovl: Set redirect on upper inode when it is linked ovl: Set redirect on metacopy files upon rename ovl: Do not set dentry type ORIGIN for broken hardlinks ovl: Add an inode flag OVL_CONST_INO ovl: Treat metacopy dentries as type OVL_PATH_MERGE ovl: Check redirects for metacopy files ovl: Move some dir related ovl_lookup_single() code in else block ovl: Do not expose metacopy only dentry from d_real() ovl: Open file with data except for the case of fsync ovl: Add helper ovl_inode_realdata() ovl: Store lower data inode in ovl_inode ovl: Fix ovl_getattr() to get number of blocks from lower ovl: Add helper ovl_dentry_lowerdata() to get lower data dentry ovl: Copy up meta inode data from lowest data inode ovl: Modify ovl_lookup() and friends to lookup metacopy dentry ...
Diffstat (limited to 'include/linux/dcache.h')
-rw-r--r--include/linux/dcache.h15
1 files changed, 4 insertions, 11 deletions
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index d32957b423d5..ef4b70f64f33 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -145,8 +145,7 @@ struct dentry_operations {
char *(*d_dname)(struct dentry *, char *, int);
struct vfsmount *(*d_automount)(struct path *);
int (*d_manage)(const struct path *, bool);
- struct dentry *(*d_real)(struct dentry *, const struct inode *,
- unsigned int, unsigned int);
+ struct dentry *(*d_real)(struct dentry *, const struct inode *);
} ____cacheline_aligned;
/*
@@ -561,15 +560,10 @@ static inline struct dentry *d_backing_dentry(struct dentry *upper)
return upper;
}
-/* d_real() flags */
-#define D_REAL_UPPER 0x2 /* return upper dentry or NULL if non-upper */
-
/**
* d_real - Return the real dentry
* @dentry: the dentry to query
* @inode: inode to select the dentry from multiple layers (can be NULL)
- * @open_flags: open flags to control copy-up behavior
- * @flags: flags to control what is returned by this function
*
* If dentry is on a union/overlay, then return the underlying, real dentry.
* Otherwise return the dentry itself.
@@ -577,11 +571,10 @@ static inline struct dentry *d_backing_dentry(struct dentry *upper)
* See also: Documentation/filesystems/vfs.txt
*/
static inline struct dentry *d_real(struct dentry *dentry,
- const struct inode *inode,
- unsigned int open_flags, unsigned int flags)
+ const struct inode *inode)
{
if (unlikely(dentry->d_flags & DCACHE_OP_REAL))
- return dentry->d_op->d_real(dentry, inode, open_flags, flags);
+ return dentry->d_op->d_real(dentry, inode);
else
return dentry;
}
@@ -596,7 +589,7 @@ static inline struct dentry *d_real(struct dentry *dentry,
static inline struct inode *d_real_inode(const struct dentry *dentry)
{
/* This usage of d_real() results in const dentry */
- return d_backing_inode(d_real((struct dentry *) dentry, NULL, 0, 0));
+ return d_backing_inode(d_real((struct dentry *) dentry, NULL));
}
struct name_snapshot {