android_kernel_asus_sm8350

History

Amir Goldstein 898cc19d8a ovl: fix freeze protection bypass in ovl_write_iter()

Tested by re-writing to an open overlayfs file while upper ext4 is frozen:

  xfs_io -f /ovl/x
  xfs_io> pwrite 0 4096
                             fsfreeze -f /ext4
  xfs_io> pwrite 0 4096

  WARNING: CPU: 0 PID: 1492 at fs/ext4/ext4_jbd2.c:53 \
           ext4_journal_check_start+0x48/0x82

After the fix, the second write blocks in ovl_write_iter() and avoids
hitting WARN_ON(sb->s_writers.frozen == SB_FREEZE_COMPLETE) in
ext4_journal_check_start().

Fixes: 2a92e07edc5e ("ovl: add ovl_write_iter()")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

2018-09-24 10:54:01 +02:00

copy_up.c

ovl: Enable metadata only feature

2018-07-20 09:56:17 +02:00

dir.c

ovl: set I_CREATING on inode being created

2018-08-22 13:15:25 -07:00

export.c

ovl: Modify ovl_lookup() and friends to lookup metacopy dentry

2018-07-20 09:56:09 +02:00

file.c

ovl: fix freeze protection bypass in ovl_write_iter()