From: "J. Bruce Fields" <bfields@xxxxxxxxxx> We'll need the same logic for rename and link. Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx> --- fs/namei.c | 13 +++---------- include/linux/fs.h | 33 +++++++++++++++++++++++++++++++-- 2 files changed, 34 insertions(+), 12 deletions(-) diff --git a/fs/namei.c b/fs/namei.c index 2826bbd..d3b6a35 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -3466,14 +3466,9 @@ int vfs_unlink(struct inode *dir, struct dentry *dentry, struct inode **delegate else { error = security_inode_unlink(dir, dentry); if (!error) { - error = break_deleg(target, O_WRONLY|O_NONBLOCK); - if (error) { - if (error == -EWOULDBLOCK && delegated_inode) { - *delegated_inode = target; - ihold(target); - } + error = try_break_deleg(target, delegated_inode); + if (error) goto out; - } error = dir->i_op->unlink(dir, dentry); if (!error) dont_mount(dentry); @@ -3543,9 +3538,7 @@ exit2: iput(inode); /* truncate the inode here */ inode = NULL; if (delegated_inode) { - error = break_deleg(delegated_inode, O_WRONLY); - iput(delegated_inode); - delegated_inode = NULL; + error = break_deleg_wait(&delegated_inode); if (!error) goto retry_deleg; } diff --git a/include/linux/fs.h b/include/linux/fs.h index ba29b37..43a3506 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1907,6 +1907,9 @@ extern bool our_mnt(struct vfsmount *mnt); extern int current_umask(void); +extern void ihold(struct inode * inode); +extern void iput(struct inode *); + /* /sys/fs */ extern struct kobject *fs_kobj; @@ -1974,6 +1977,28 @@ static inline int break_deleg(struct inode *inode, unsigned int mode) return 0; } +static inline int try_break_deleg(struct inode *inode, struct inode **delegated_inode) +{ + int ret; + + ret = break_deleg(inode, O_WRONLY|O_NONBLOCK); + if (ret == -EWOULDBLOCK && delegated_inode) { + *delegated_inode = inode; + ihold(inode); + } + return ret; +} + +static inline int break_deleg_wait(struct inode **delegated_inode) +{ + int ret; + + ret = break_deleg(*delegated_inode, O_WRONLY); + iput(*delegated_inode); + *delegated_inode = NULL; + return ret; +} + #else /* !CONFIG_FILE_LOCKING */ static inline int locks_mandatory_locked(struct inode *inode) { @@ -2017,6 +2042,12 @@ static inline int break_deleg(struct inode *inode, unsigned int mode) { return 0; } + +static inline int try_break_deleg(struct inode *inode, struct delegated_inode **inode) +{ + return 0; +} + #endif /* CONFIG_FILE_LOCKING */ /* fs/open.c */ @@ -2346,8 +2377,6 @@ extern loff_t vfs_llseek(struct file *file, loff_t offset, int whence); extern int inode_init_always(struct super_block *, struct inode *); extern void inode_init_once(struct inode *); extern void address_space_init_once(struct address_space *mapping); -extern void ihold(struct inode * inode); -extern void iput(struct inode *); extern struct inode * igrab(struct inode *); extern ino_t iunique(struct super_block *, ino_t); extern int inode_needs_sync(struct inode *inode); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html