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authorAlexey Dobriyan <adobriyan@gmail.com>2008-07-25 01:48:29 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-25 10:53:44 -0700
commit881adb85358309ea9c6f707394002719982ec607 (patch)
treee4ffc2f6ca6013bab97bdb77b80e98b46a8d01e1 /fs/proc/internal.h
parent6e644c3126149b65460610fe5a00d8a162092abe (diff)
downloadop-kernel-dev-881adb85358309ea9c6f707394002719982ec607.zip
op-kernel-dev-881adb85358309ea9c6f707394002719982ec607.tar.gz
proc: always do ->release
Current two-stage scheme of removing PDE emphasizes one bug in proc: open rmmod remove_proc_entry close ->release won't be called because ->proc_fops were cleared. In simple cases it's small memory leak. For every ->open, ->release has to be done. List of openers is introduced which is traversed at remove_proc_entry() if neeeded. Discussions with Al long ago (sigh). Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc/internal.h')
-rw-r--r--fs/proc/internal.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 8d67616..4422023 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -89,3 +89,10 @@ struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *ino,
struct dentry *dentry);
int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent,
filldir_t filldir);
+
+struct pde_opener {
+ struct inode *inode;
+ struct file *file;
+ int (*release)(struct inode *, struct file *);
+ struct list_head lh;
+};
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