diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2016-01-15 16:55:56 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-15 17:56:32 -0800 |
| commit | fe683adabfe6629c0b6db32bbbc1ce6cacbf2117 (patch) | |
| tree | 16798d03701b19665bcfcdfdf7796c4b52641242 /fs/dax.c | |
| parent | 0e749e54244eec87b2a3cd0a4314e60bc6781115 (diff) | |
| download | linux-fe683adabfe6629c0b6db32bbbc1ce6cacbf2117.tar.gz | |
dax: guarantee page aligned results from bdev_direct_access()
If a ->direct_access() implementation ever returns a map count less than PAGE_SIZE, catch the error in bdev_direct_access(). This simplifies error checking in upper layers. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Reported-by: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/dax.c')
| -rw-r--r-- | fs/dax.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/dax.c b/fs/dax.c index 11721c0fc127..1080fb50fa4d 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -52,7 +52,6 @@ int dax_clear_blocks(struct inode *inode, sector_t block, long size) sz = min_t(long, count, SZ_128K); clear_pmem(addr, sz); size -= sz; - BUG_ON(sz & 511); sector += sz / 512; cond_resched(); } while (size); |