diff options
Diffstat (limited to 'fs/9p/vfs_dentry.c')
| -rw-r--r-- | fs/9p/vfs_dentry.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/fs/9p/vfs_dentry.c b/fs/9p/vfs_dentry.c index 01338d4c2d9e..5061f192eafd 100644 --- a/fs/9p/vfs_dentry.c +++ b/fs/9p/vfs_dentry.c @@ -61,7 +61,7 @@ static void v9fs_dentry_release(struct dentry *dentry) p9_fid_put(hlist_entry(p, struct p9_fid, dlist)); } -static int v9fs_lookup_revalidate(struct dentry *dentry, unsigned int flags) +static int __v9fs_lookup_revalidate(struct dentry *dentry, unsigned int flags) { struct p9_fid *fid; struct inode *inode; @@ -99,14 +99,36 @@ out_valid: return 1; } +static int v9fs_lookup_revalidate(struct inode *dir, const struct qstr *name, + struct dentry *dentry, unsigned int flags) +{ + return __v9fs_lookup_revalidate(dentry, flags); +} + +static bool v9fs_dentry_unalias_trylock(const struct dentry *dentry) +{ + struct v9fs_session_info *v9ses = v9fs_dentry2v9ses(dentry); + return down_write_trylock(&v9ses->rename_sem); +} + +static void v9fs_dentry_unalias_unlock(const struct dentry *dentry) +{ + struct v9fs_session_info *v9ses = v9fs_dentry2v9ses(dentry); + up_write(&v9ses->rename_sem); +} + const struct dentry_operations v9fs_cached_dentry_operations = { .d_revalidate = v9fs_lookup_revalidate, - .d_weak_revalidate = v9fs_lookup_revalidate, + .d_weak_revalidate = __v9fs_lookup_revalidate, .d_delete = v9fs_cached_dentry_delete, .d_release = v9fs_dentry_release, + .d_unalias_trylock = v9fs_dentry_unalias_trylock, + .d_unalias_unlock = v9fs_dentry_unalias_unlock, }; const struct dentry_operations v9fs_dentry_operations = { .d_delete = always_delete_dentry, .d_release = v9fs_dentry_release, + .d_unalias_trylock = v9fs_dentry_unalias_trylock, + .d_unalias_unlock = v9fs_dentry_unalias_unlock, }; |