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(parent: 311324a) | patch
NFSv4.1: Fix wraparound issues in pnfs_seqid_is_newer()
authorTrond Myklebust <trond.myklebust@primarydata.com>
Wed, 12 Feb 2014 14:36:59 +0000 (09:36 -0500)
committerTrond Myklebust <trond.myklebust@primarydata.com>
Thu, 20 Feb 2014 02:21:01 +0000 (21:21 -0500)
commit2c64c57dfc4b7946f7abd8af653f55af581bc2c3
treeac1741fe6177634056d41ba1437d122fc778a403tree | snapshot (tar.gz zip)
parent311324ad1713666a6e803aecf0d4e1a136a5b34acommit | diff
NFSv4.1: Fix wraparound issues in pnfs_seqid_is_newer()

Subtraction of signed integers does not have well defined wraparound
semantics in the C99 standard. In order to be wraparound-safe, we
have to use unsigned subtraction, and then cast the result.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
fs/nfs/pnfs.c diff | blob | blame | history