From 9656b2c14c6ee0806c90a6be41dec71117fc8f50 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Tue, 8 Jan 2008 08:14:30 +0000 Subject: [GFS2] Fix problems relating to execution of files on GFS2 This patch fixes a couple of problems which affected the execution of files on GFS2. The first is that there was a corner case where inodes were not always uptodate at the point at which permissions checks were being carried out, this was resulting in refusal of execute permission, but only on the first lookup, subsequent requests worked correctly. The second was a problem relating to incorrect updating of file sizes which was introduced with the write_begin/end code for GFS2 a little while back. Signed-off-by: Steven Whitehouse Cc: Abhijith Das --- fs/gfs2/ops_address.c | 13 +++++-------- fs/gfs2/ops_inode.c | 12 +++++++++++- 2 files changed, 16 insertions(+), 9 deletions(-) diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c index e16ad810449..37406a379e7 100644 --- a/fs/gfs2/ops_address.c +++ b/fs/gfs2/ops_address.c @@ -848,14 +848,11 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping, ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata); - if (likely(ret >= 0)) { - copied = ret; - if ((pos + copied) > inode->i_size) { - di = (struct gfs2_dinode *)dibh->b_data; - ip->i_di.di_size = inode->i_size; - di->di_size = cpu_to_be64(inode->i_size); - mark_inode_dirty(inode); - } + if (likely(ret >= 0) && (inode->i_size > ip->i_di.di_size)) { + di = (struct gfs2_dinode *)dibh->b_data; + ip->i_di.di_size = inode->i_size; + di->di_size = cpu_to_be64(inode->i_size); + mark_inode_dirty(inode); } if (inode == sdp->sd_rindex) diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c index 291f0c7eaa3..8386ab323e3 100644 --- a/fs/gfs2/ops_inode.c +++ b/fs/gfs2/ops_inode.c @@ -113,8 +113,18 @@ static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry, if (inode && IS_ERR(inode)) return ERR_PTR(PTR_ERR(inode)); - if (inode) + if (inode) { + struct gfs2_glock *gl = GFS2_I(inode)->i_gl; + struct gfs2_holder gh; + int error; + error = gfs2_glock_nq_init(gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); + if (error) { + iput(inode); + return ERR_PTR(error); + } + gfs2_glock_dq_uninit(&gh); return d_splice_alias(inode, dentry); + } d_add(dentry, inode); return NULL; -- cgit v1.2.3