From 9a53c3a783c2fa9b969628e65695c11c3e51e673 Mon Sep 17 00:00:00 2001 From: Dave Hansen Date: Sat, 30 Sep 2006 23:29:03 -0700 Subject: [PATCH] r/o bind mounts: unlink: monitor i_nlink When a filesystem decrements i_nlink to zero, it means that a write must be performed in order to drop the inode from the filesystem. We're shortly going to have keep filesystems from being remounted r/o between the time that this i_nlink decrement and that write occurs. So, add a little helper function to do the decrements. We'll tie into it in a bit to note when i_nlink hits zero. Signed-off-by: Dave Hansen Acked-by: Christoph Hellwig Cc: Al Viro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fs.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/fs.h b/include/linux/fs.h index 4bb70871873..26d3c61116c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1225,9 +1225,14 @@ static inline void inode_inc_link_count(struct inode *inode) mark_inode_dirty(inode); } -static inline void inode_dec_link_count(struct inode *inode) +static inline void drop_nlink(struct inode *inode) { inode->i_nlink--; +} + +static inline void inode_dec_link_count(struct inode *inode) +{ + drop_nlink(inode); mark_inode_dirty(inode); } -- cgit v1.2.3