Unverified Commit 12741624 authored by Mateusz Guzik's avatar Mateusz Guzik Committed by Christian Brauner
Browse files

fs: add iput_not_last() 



Signed-off-by: default avatarMateusz Guzik <mjguzik@gmail.com>
Link: https://patch.msgid.link/20251105212025.807549-1-mjguzik@gmail.com


Reviewed-by: default avatarJan Kara <jack@suse.cz>
Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 3cd1548a

fs/inode.c

+12 −0
Original line number Diff line number Diff line
@@ -1967,6 +1967,18 @@ void iput(struct inode *inode) 
}

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

include/linux/fs.h

+1 −0
Original line number Diff line number Diff line
@@ -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);