From: Latchesar Ionkov <lucho@ionkov.net>
Date: Sun, 8 Jan 2006 09:04:59 +0000 (-0800)
Subject: [PATCH] v9fs: fix fid management in v9fs_create
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d8da097afb765654c866062148fd98b11db9003e;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[PATCH] v9fs: fix fid management in v9fs_create

v9fs_create doesn't manage correctly the fids when it is called to create a
directory..  The fid created by the create 9P call (newfid) and the one
created by walking to already created file (wfidno) are not used
consistently.

This patch cleans up the usage of newfid and wfidno.

Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
Cc: Eric Van Hensbergen <ericvh@ericvh.myip.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 466002a1fe32..f11edde6432e 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -385,13 +385,14 @@ v9fs_create(struct inode *dir,
 		fid->iounit = iounit;
 	} else {
 		err = v9fs_t_clunk(v9ses, newfid);
+		newfid = -1;
 		if (err < 0)
 			dprintk(DEBUG_ERROR, "clunk for mkdir failed: %d\n", err);
 	}
 
 	/* walk to the newly created file and put the fid in the dentry */
 	wfidno = v9fs_get_idpool(&v9ses->fidpool);
-	if (newfid < 0) {
+	if (wfidno < 0) {
 		eprintk(KERN_WARNING, "no free fids available\n");
 		return -ENOSPC;
 	}
@@ -408,7 +409,6 @@ v9fs_create(struct inode *dir,
 	fcall = NULL;
 
 	if (!v9fs_fid_create(file_dentry, v9ses, wfidno, 0)) {
-		v9fs_t_clunk(v9ses, newfid);
 		v9fs_put_idpool(wfidno, &v9ses->fidpool);
 
 		goto CleanUpFid;
@@ -419,7 +419,7 @@ v9fs_create(struct inode *dir,
 	    (perm & V9FS_DMDEVICE))
 		return 0;
 
-	result = v9fs_t_stat(v9ses, newfid, &fcall);
+	result = v9fs_t_stat(v9ses, wfidno, &fcall);
 	if (result < 0) {
 		dprintk(DEBUG_ERROR, "stat error: %s(%d)\n", FCALL_ERROR(fcall),
 			result);