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authorDavid Woodhouse <David.Woodhouse@intel.com>2010-06-03 08:09:12 +0100
committerDavid Woodhouse <David.Woodhouse@intel.com>2010-06-03 08:22:04 +0100
commite72e6497e74811e01d72b4c1b7537b3aea3ee857 (patch)
treed78dec67d0aaeea807e5ab32141802620ec7ae41 /fs/jffs2/dir.c
parentf324e4cb2cadd9a42932c8a158e761ae31b88e72 (diff)
jffs2: Fix NFS race by using insert_inode_locked()
New inodes need to be locked as we're creating them, so they don't get used by other things (like NFSd) before they're ready. Pointed out by Al Viro. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'fs/jffs2/dir.c')
-rw-r--r--fs/jffs2/dir.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index cb7ef34d384..166062a6823 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -222,15 +222,18 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode,
dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(ri->ctime));
jffs2_free_raw_inode(ri);
- d_instantiate(dentry, inode);
D1(printk(KERN_DEBUG "jffs2_create: Created ino #%lu with mode %o, nlink %d(%d). nrpages %ld\n",
inode->i_ino, inode->i_mode, inode->i_nlink,
f->inocache->pino_nlink, inode->i_mapping->nrpages));
+
+ d_instantiate(dentry, inode);
+ unlock_new_inode(inode);
return 0;
fail:
make_bad_inode(inode);
+ unlock_new_inode(inode);
iput(inode);
jffs2_free_raw_inode(ri);
return ret;
@@ -447,10 +450,12 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
jffs2_complete_reservation(c);
d_instantiate(dentry, inode);
+ unlock_new_inode(inode);
return 0;
fail:
make_bad_inode(inode);
+ unlock_new_inode(inode);
iput(inode);
return ret;
}
@@ -592,10 +597,12 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
jffs2_complete_reservation(c);
d_instantiate(dentry, inode);
+ unlock_new_inode(inode);
return 0;
fail:
make_bad_inode(inode);
+ unlock_new_inode(inode);
iput(inode);
return ret;
}
@@ -767,11 +774,12 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de
jffs2_complete_reservation(c);
d_instantiate(dentry, inode);
-
+ unlock_new_inode(inode);
return 0;
fail:
make_bad_inode(inode);
+ unlock_new_inode(inode);
iput(inode);
return ret;
}