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| author | Ingo Molnar <mingo@kernel.org> | 2016-07-07 10:35:28 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-07-07 10:35:28 +0200 |
| commit | 4b4b20852d1009c5e8bc357b22353b62e3a241c7 (patch) | |
| tree | 1026418471fe10c5b9f2fdff8a6b49bf070938fc /fs/dax.c | |
| parent | 5130213721d01b6632c255d4295a8102cbb58379 (diff) | |
| parent | f00c0afdfa625165a609513bc74164d56752ec3e (diff) | |
| download | linux-4b4b20852d1009c5e8bc357b22353b62e3a241c7.tar.gz linux-4b4b20852d1009c5e8bc357b22353b62e3a241c7.tar.bz2 linux-4b4b20852d1009c5e8bc357b22353b62e3a241c7.zip | |
Merge branch 'timers/fast-wheel' into timers/core
Diffstat (limited to 'fs/dax.c')
| -rw-r--r-- | fs/dax.c | 7 |
1 files changed, 6 insertions, 1 deletions
@@ -208,7 +208,12 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter, dax.addr += first; size = map_len - first; } - max = min(pos + size, end); + /* + * pos + size is one past the last offset for IO, + * so pos + size can overflow loff_t at extreme offsets. + * Cast to u64 to catch this and get the true minimum. + */ + max = min_t(u64, pos + size, end); } if (iov_iter_rw(iter) == WRITE) { |