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authorJeff Layton <jlayton@redhat.com>2012-10-11 00:43:13 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-10-13 04:15:10 +0400
commit7950e3852ab86826b7349a535d2e8b0000340d7f (patch)
treeb07bcf28bf0fc3bdc610595287250c3c3a3d974a /include
parentadb5c2473d3f91526c79db972aafb20a56d3fbb3 (diff)
downloadlinux-7950e3852ab86826b7349a535d2e8b0000340d7f.tar.xz
vfs: embed struct filename inside of names_cache allocation if possible
In the common case where a name is much smaller than PATH_MAX, an extra allocation for struct filename is unnecessary. Before allocating a separate one, try to embed the struct filename inside the buffer first. If it turns out that that's not long enough, then fall back to allocating a separate struct filename and redoing the copy. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include')
-rw-r--r--include/linux/fs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 4aa7160a51ce..65fbf571023f 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2201,6 +2201,7 @@ struct filename {
const char *name; /* pointer to actual string */
const __user char *uptr; /* original userland pointer */
struct audit_names *aname;
+ bool separate; /* should "name" be freed? */
};
extern int do_truncate(struct dentry *, loff_t start, unsigned int time_attrs,