diff options
| author | Bob Peterson <rpeterso@redhat.com> | 2013-02-01 12:03:02 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-02-28 05:38:33 -0800 |
| commit | f5f9cd078adc085bc74cc5465a975beac8d4c5d3 (patch) | |
| tree | 2aa131170f00b1daeceeb687e0aa72f4e747e2d3 /fs | |
| parent | ca368073ffcbdd25486d65c150039423f677f821 (diff) | |
GFS2: Get a block reservation before resizing a file
commit d2b47cfb26fe06002b8011707baac71a9ae8166f upstream.
This patch allocates a block reservation structure before growing
or shrinking a file. Without this structure, the grow or shink code
can reference the bad pointer.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/gfs2/bmap.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index a68e91bcef3d..9a3945a7f48f 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -1286,6 +1286,10 @@ int gfs2_setattr_size(struct inode *inode, u64 newsize) inode_dio_wait(inode); + ret = gfs2_rs_alloc(GFS2_I(inode)); + if (ret) + return ret; + oldsize = inode->i_size; if (newsize >= oldsize) return do_grow(inode, newsize); |