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authorAlexey Dobriyan <adobriyan@gmail.com>2009-05-04 03:32:03 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2009-06-11 21:36:06 -0400
commitf3da392e9ff14b9f388e74319e6d195848991c07 (patch)
treed9e7660e5c0b4524aeaafcc5b89a9d68a7ca3817 /include/linux/dcache.h
parent8c85e125124a473d6f3e9bb187b0b84207f81d91 (diff)
dcache: extrace and use d_unlinked()
d_unlinked() will be used in middle-term to ban checkpointing when opened but unlinked file is detected, and in long term, to detect such situation and special case on it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/dcache.h')
-rw-r--r--include/linux/dcache.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 72ce2ae88591..30b93b2a01a4 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -353,6 +353,11 @@ static inline int d_unhashed(struct dentry *dentry)
return (dentry->d_flags & DCACHE_UNHASHED);
}
+static inline int d_unlinked(struct dentry *dentry)
+{
+ return d_unhashed(dentry) && !IS_ROOT(dentry);
+}
+
static inline struct dentry *dget_parent(struct dentry *dentry)
{
struct dentry *ret;