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Diffstat (limited to 'fs/gfs2/ops_file.c')
-rw-r--r--fs/gfs2/ops_file.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c
index 0ff512a..1737af9 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;
}