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authorSteven Whitehouse <swhiteho@redhat.com>2013-06-11 16:45:29 +0400
committerSteven Whitehouse <swhiteho@redhat.com>2013-06-11 16:45:29 +0400
commit5a00f3cc978be45b9d2597851bedaa40630bc597 (patch)
tree716a1b29594e352c4c793b699331d4d57578cce9 /fs/gfs2/dir.h
parenta9aefd707c65aa5a7945b3f16bd39f314aa8414d (diff)
downloadlinux-5a00f3cc978be45b9d2597851bedaa40630bc597.tar.xz
GFS2: Only do one directory search on create
Creation of a new inode requires a directory search in order to ensure that we are not trying to create an inode with the same name as an existing one. This was hidden away inside the create_ok() function. In the case that there was an existing inode, and a lookup can be substituted for a create (which is the case with regular files when the O_EXCL flag is not in use) then we were doing a second lookup in order to return the inode. This patch merges these two lookups into one. This can be done by passing a flag to gfs2_dir_search() to tell it to just return -EEXIST in the cases where we don't actually want to look up the inode. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/dir.h')
-rw-r--r--fs/gfs2/dir.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/gfs2/dir.h b/fs/gfs2/dir.h
index 98c960beab35..d3f273870b49 100644
--- a/fs/gfs2/dir.h
+++ b/fs/gfs2/dir.h
@@ -18,7 +18,8 @@ struct gfs2_inode;
struct gfs2_inum;
extern struct inode *gfs2_dir_search(struct inode *dir,
- const struct qstr *filename);
+ const struct qstr *filename,
+ bool fail_on_exist);
extern int gfs2_dir_check(struct inode *dir, const struct qstr *filename,
const struct gfs2_inode *ip);
extern int gfs2_dir_add(struct inode *inode, const struct qstr *filename,