diff options
| author | Mateusz Guzik <mjguzik@gmail.com> | 2025-11-05 22:20:24 +0100 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-11-12 10:47:42 +0100 |
| commit | 12741624645e098b2234a5ae341045a97473caf1 (patch) | |
| tree | eb0b63e9d9fac56311fc8718ed8619859e02dda2 | |
| parent | 3cd1548a278c7d6a9bdef1f1866e7cf66bfd3518 (diff) | |
fs: add iput_not_last()
Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Link: https://patch.msgid.link/20251105212025.807549-1-mjguzik@gmail.com
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
| -rw-r--r-- | fs/inode.c | 12 | ||||
| -rw-r--r-- | include/linux/fs.h | 1 |
2 files changed, 13 insertions, 0 deletions
diff --git a/fs/inode.c b/fs/inode.c index ec9339024ac3..cff1d3af0d57 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -1967,6 +1967,18 @@ retry: } EXPORT_SYMBOL(iput); +/** + * iput_not_last - put an inode assuming this is not the last reference + * @inode: inode to put + */ +void iput_not_last(struct inode *inode) +{ + VFS_BUG_ON_INODE(atomic_read(&inode->i_count) < 2, inode); + + WARN_ON(atomic_sub_return(1, &inode->i_count) == 0); +} +EXPORT_SYMBOL(iput_not_last); + #ifdef CONFIG_BLOCK /** * bmap - find a block number in a file diff --git a/include/linux/fs.h b/include/linux/fs.h index 249a1da8440e..dd3b57cfadee 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2824,6 +2824,7 @@ extern int current_umask(void); extern void ihold(struct inode * inode); extern void iput(struct inode *); +void iput_not_last(struct inode *); int inode_update_timestamps(struct inode *inode, int flags); int generic_update_time(struct inode *, int); |