nilfs2: return EBUSY against delete request on snapshot

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This helps userland programs like the rmcp command to distinguish
error codes returned against a checkpoint removal request.

Previously -EPERM was returned, and not discriminable from real
permission errors.  This also allows removal of the latest checkpoint
because the deletion leads to create a new checkpoint, and thus it's
harmless for the filesystem.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>

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Ryusuke Konishi 2009-05-30 19:08:09 +09:00

parent fb6e7113ae

commit 30c25be71f

1 changed files with 2 additions and 12 deletions

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14

fs/nilfs2/cpfile.c

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