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authorAl Viro <viro@zeniv.linux.org.uk>2012-03-30 14:08:28 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-03-31 16:03:16 -0400
commit37c17e1f377696c797e75c1e915e838b3e0c6120 (patch)
tree97af490a11ae06776978b4ed171ba7ceff36128f /fs
parent3f6c7c71a2af6eb306e16562c6ee1bfdb48015fb (diff)
downloadlinux-37c17e1f377696c797e75c1e915e838b3e0c6120.tar.bz2
untangling do_lookup() - expand the area under ->i_mutex
keep holding ->i_mutex over revalidation parts Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
-rw-r--r--fs/namei.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/namei.c b/fs/namei.c
index 157f3debbf98..48fc0fb8c9d1 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1173,6 +1173,7 @@ retry:
BUG_ON(nd->inode != dir);
mutex_lock(&dir->i_mutex);
+l:
dentry = d_lookup(parent, name);
if (likely(!dentry)) {
dentry = d_alloc_and_lookup(parent, name, nd);
@@ -1193,11 +1194,11 @@ retry:
need_reval = 0;
status = 1;
}
- mutex_unlock(&dir->i_mutex);
if (unlikely(dentry->d_flags & DCACHE_OP_REVALIDATE) && need_reval)
status = d_revalidate(dentry, nd);
if (unlikely(status <= 0)) {
if (status < 0) {
+ mutex_unlock(&dir->i_mutex);
dput(dentry);
return status;
}
@@ -1205,9 +1206,10 @@ retry:
dput(dentry);
dentry = NULL;
need_reval = 1;
- goto retry;
+ goto l;
}
}
+ mutex_unlock(&dir->i_mutex);
goto done;
}
if (unlikely(dentry->d_flags & DCACHE_OP_REVALIDATE) && need_reval)