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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-06 14:19:26 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-06 14:19:26 -0700 |
| commit | 3b54765cca23152ec0cc254b75c877c10f6e2870 (patch) | |
| tree | 795785d2a9d7498df9452be138867bd996c4cea5 /fs/direct-io.c | |
| parent | 3fd14cdcc05a682b03743683ce3a726898b20555 (diff) | |
| parent | 97b1255cb27c551d7c3c5c496d787da40772da99 (diff) | |
| download | lwn-3b54765cca23152ec0cc254b75c877c10f6e2870.tar.gz lwn-3b54765cca23152ec0cc254b75c877c10f6e2870.zip | |
Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton:
- a few misc things
- ocfs2 updates
- the v9fs maintainers have been missing for a long time. I've taken
over v9fs patch slinging.
- most of MM
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (116 commits)
mm,oom_reaper: check for MMF_OOM_SKIP before complaining
mm/ksm: fix interaction with THP
mm/memblock.c: cast constant ULLONG_MAX to phys_addr_t
headers: untangle kmemleak.h from mm.h
include/linux/mmdebug.h: make VM_WARN* non-rvals
mm/page_isolation.c: make start_isolate_page_range() fail if already isolated
mm: change return type to vm_fault_t
mm, oom: remove 3% bonus for CAP_SYS_ADMIN processes
mm, page_alloc: wakeup kcompactd even if kswapd cannot free more memory
kernel/fork.c: detect early free of a live mm
mm: make counting of list_lru_one::nr_items lockless
mm/swap_state.c: make bool enable_vma_readahead and swap_vma_readahead() static
block_invalidatepage(): only release page if the full page was invalidated
mm: kernel-doc: add missing parameter descriptions
mm/swap.c: remove @cold parameter description for release_pages()
mm/nommu: remove description of alloc_vm_area
zram: drop max_zpage_size and use zs_huge_class_size()
zsmalloc: introduce zs_huge_class_size()
mm: fix races between swapoff and flush dcache
fs/direct-io.c: minor cleanups in do_blockdev_direct_IO
...
Diffstat (limited to 'fs/direct-io.c')
| -rw-r--r-- | fs/direct-io.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/fs/direct-io.c b/fs/direct-io.c index ba12ee659673..874607bb6e02 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -1177,9 +1177,9 @@ do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode, unsigned blkbits = i_blkbits; unsigned blocksize_mask = (1 << blkbits) - 1; ssize_t retval = -EINVAL; - size_t count = iov_iter_count(iter); + const size_t count = iov_iter_count(iter); loff_t offset = iocb->ki_pos; - loff_t end = offset + count; + const loff_t end = offset + count; struct dio *dio; struct dio_submit sdio = { 0, }; struct buffer_head map_bh = { 0, }; @@ -1200,7 +1200,7 @@ do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode, } /* watch out for a 0 len io from a tricksy fs */ - if (iov_iter_rw(iter) == READ && !iov_iter_count(iter)) + if (iov_iter_rw(iter) == READ && !count) return 0; dio = kmem_cache_alloc(dio_cache, GFP_KERNEL); @@ -1315,8 +1315,7 @@ do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode, dio->should_dirty = (iter->type == ITER_IOVEC); sdio.iter = iter; - sdio.final_block_in_request = - (offset + iov_iter_count(iter)) >> blkbits; + sdio.final_block_in_request = end >> blkbits; /* * In case of non-aligned buffers, we may need 2 more |