diff options
| author | Stephen Boyd <sboyd@codeaurora.org> | 2012-04-05 14:25:09 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-04-05 15:25:50 -0700 |
| commit | 20955e891d828b2027281fe3295dae6af8e0423b (patch) | |
| tree | 551b8b4a3515f3b99e357e8cef5bc2e5d5051d50 /fs/libfs.c | |
| parent | 7563ec4c211ba59c2331dc6b94a068250345c387 (diff) | |
| download | lwn-20955e891d828b2027281fe3295dae6af8e0423b.tar.gz lwn-20955e891d828b2027281fe3295dae6af8e0423b.zip | |
libfs: add simple_open()
debugfs and a few other drivers use an open-coded version of
simple_open() to pass a pointer from the file to the read/write file
ops. Add support for this simple case to libfs so that we can remove
the many duplicate copies of this simple function.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/libfs.c')
| -rw-r--r-- | fs/libfs.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/libfs.c b/fs/libfs.c index 4a0d1f06da57..358094f0433d 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -264,6 +264,13 @@ Enomem: return ERR_PTR(-ENOMEM); } +int simple_open(struct inode *inode, struct file *file) +{ + if (inode->i_private) + file->private_data = inode->i_private; + return 0; +} + int simple_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry) { struct inode *inode = old_dentry->d_inode; @@ -984,6 +991,7 @@ EXPORT_SYMBOL(simple_dir_operations); EXPORT_SYMBOL(simple_empty); EXPORT_SYMBOL(simple_fill_super); EXPORT_SYMBOL(simple_getattr); +EXPORT_SYMBOL(simple_open); EXPORT_SYMBOL(simple_link); EXPORT_SYMBOL(simple_lookup); EXPORT_SYMBOL(simple_pin_fs); |