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authorMiklos Szeredi <mszeredi@redhat.com>2016-06-28 11:47:32 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2016-07-24 16:36:29 -0400
commit285b102d3b745f3c2c110c9c327741d87e64aacc (patch)
treec0d13e12f96b7730a1db2633f8e3743fbc267ade /Documentation/filesystems
parent17648b871d3cecf310f55ce8c6ce5821d135f6ec (diff)
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vfs: new d_init method
Allow filesystem to initialize dentry at allocation time. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r--Documentation/filesystems/Locking2
-rw-r--r--Documentation/filesystems/vfs.txt3
2 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking
index a38da93865c2..794adbe55399 100644
--- a/Documentation/filesystems/Locking
+++ b/Documentation/filesystems/Locking
@@ -15,6 +15,7 @@ prototypes:
int (*d_compare)(const struct dentry *, const struct dentry *,
unsigned int, const char *, const struct qstr *);
int (*d_delete)(struct dentry *);
+ int (*d_init)(struct dentry *);
void (*d_release)(struct dentry *);
void (*d_iput)(struct dentry *, struct inode *);
char *(*d_dname)((struct dentry *dentry, char *buffer, int buflen);
@@ -30,6 +31,7 @@ d_weak_revalidate:no no yes no
d_hash no no no maybe
d_compare: yes no no maybe
d_delete: no yes no no
+d_init: no no yes no
d_release: no no yes no
d_prune: no yes no no
d_iput: no no yes no
diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
index 70a056fe51a3..15c3fa7c89cc 100644
--- a/Documentation/filesystems/vfs.txt
+++ b/Documentation/filesystems/vfs.txt
@@ -923,6 +923,7 @@ struct dentry_operations {
int (*d_compare)(const struct dentry *, const struct dentry *,
unsigned int, const char *, const struct qstr *);
int (*d_delete)(const struct dentry *);
+ int (*d_init)(struct dentry *);
void (*d_release)(struct dentry *);
void (*d_iput)(struct dentry *, struct inode *);
char *(*d_dname)(struct dentry *, char *, int);
@@ -995,6 +996,8 @@ struct dentry_operations {
always cache a reachable dentry. d_delete must be constant and
idempotent.
+ d_init: called when a dentry is allocated
+
d_release: called when a dentry is really deallocated
d_iput: called when a dentry loses its inode (just prior to its