73a652a1b0
The FITRIM ioctl updates the fstrim_range structure it receives. This way the caller can determine how many bytes were trimmed. The guest-fstrim logic reuses the same fstrim_range for each filesystem, effectively limiting each filesystem to trim at most as much as the previous was able to trim. If a previous filesystem would have trimmed 0 bytes, than the next filesystem would report an error 'Invalid argument' because a FITRIM request with length 0 is not valid. This change resets the fstrim_range structure for each filesystem. Signed-off-by: Justin Ossevoort <justin@quarantainenet.nl> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Read the documentation in qemu-doc.html or on http://wiki.qemu-project.org - QEMU team