diff options
Diffstat (limited to 'fs/gfs2/ops_file.c')
| -rw-r--r-- | fs/gfs2/ops_file.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c index 0ff512a1192..1737af98a42 100644 --- a/fs/gfs2/ops_file.c +++ b/fs/gfs2/ops_file.c @@ -15,6 +15,7 @@ #include <linux/uio.h> #include <linux/blkdev.h> #include <linux/mm.h> +#include <linux/mount.h> #include <linux/fs.h> #include <linux/gfs2_ondisk.h> #include <linux/ext2_fs.h> @@ -220,10 +221,14 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask) int error; u32 new_flags, flags; - error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); + error = mnt_want_write(filp->f_path.mnt); if (error) return error; + error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); + if (error) + goto out_drop_write; + flags = ip->i_di.di_flags; new_flags = (flags & ~mask) | (reqflags & mask); if ((new_flags ^ flags) == 0) @@ -242,7 +247,7 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask) !capable(CAP_LINUX_IMMUTABLE)) goto out; if (!IS_IMMUTABLE(inode)) { - error = permission(inode, MAY_WRITE, NULL); + error = gfs2_permission(inode, MAY_WRITE); if (error) goto out; } @@ -272,6 +277,8 @@ out_trans_end: gfs2_trans_end(sdp); out: gfs2_glock_dq_uninit(&gh); +out_drop_write: + mnt_drop_write(filp->f_path.mnt); return error; } |