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Currently you can just destroy a qgroup even though it is in use by other qgroups
or has qgroups assigned to it. This patch prevents destruction of qgroups unless
they are completely unused. Otherwise destroy will return EBUSY.
Reported-by: Eric Hopper <hopper@omnifarious.org>
Signed-off-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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If a qgroup that has still assignments is deleted by the user, the corresponding
relations are left in the tree. This leads to an unmountable filesystem.
With this patch, those relations are simple ignored.
Reported-by: Eric Hopper <hopper@omnifarious.org>
Signed-off-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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We should free quota_root before returning from the error
handling code.
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
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ulist_alloc() has the possibility of returning NULL.
So, it is necessary to check the return value.
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
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Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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Btrfs send/receive uses the aux field to store inode numbers. On
32 bit machines this may become a problem.
Also fix all users of ulist_add and ulist_add_merged.
Reported-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Alexander Block <ablock84@googlemail.com>
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This reverts commit 5986802c2fcc754040bb7ed95f30bb16c4a843b7.
Both paths are not error paths but regular cases where non-qgroup
subvols are involved.
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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add_qgroup_rb() never returns NULL, only error pointers.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
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These are returning zero when it should be returning a negative error
code.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
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Signed-off-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
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