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| author | Amir Goldstein <amir73il@gmail.com> | 2018-09-18 16:34:33 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2018-09-24 10:54:01 +0200 |
| commit | d9d150ae50675e3c1d68047aafb2e981be685d90 (patch) | |
| tree | f0b76cd1a916c487957bfd5690b3e19c1dbb8ccb /fs/nfsd/vfs.c | |
| parent | 898cc19d8af2d6a80a9f2804b0db2e83c5dd8863 (diff) | |
ovl: fix freeze protection bypass in ovl_clone_file_range()
Tested by doing clone on overlayfs while upper xfs+reflink is frozen:
xfs_io -f /ovl/y
fsfreeze -f /xfs
xfs_io> reflink /ovl/x
Before the fix xfs_io enters xfs_reflink_remap_range() and blocks
in xfs_trans_alloc(). After the fix, xfs_io blocks outside xfs code
in ovl_clone_file_range().
Fixes: 8ede205541ff ("ovl: add reflink/copyfile/dedup support")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/nfsd/vfs.c')
0 files changed, 0 insertions, 0 deletions