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History

Benjamin Coddington 41963c10c4 pnfs/blocklayout: update last_write_offset atomically with extents

Block/SCSI layout write completion may add committable extents to the
extent tree before updating the layout's last-written byte under the inode
lock.  If a sync happens before this value is updated, then
prepare_layoutcommit may find and encode these extents which would produce
a LAYOUTCOMMIT request whose encoded extents are larger than the request's
loca_length.

Fix this by using a last-written byte value that is updated atomically with
the extent tree so that commitable extents always match.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

2016-08-23 11:41:38 -04:00

blocklayout.c

pnfs/blocklayout: update last_write_offset atomically with extents

2016-08-23 11:41:38 -04:00

blocklayout.h

pnfs/blocklayout: update last_write_offset atomically with extents

2016-08-23 11:41:38 -04:00

dev.c

Fix NULL pointer dereference in bl_free_device().

2016-07-22 15:14:21 -04:00

extent_tree.c

pnfs/blocklayout: update last_write_offset atomically with extents