diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-27 14:56:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-27 14:56:59 -0700 |
| commit | af7d93729c7c2beadea8ec5a6e66c53bef0e6290 (patch) | |
| tree | d807ab034c13fe7e758c8ca11fb8ee38e9ceb38c /fs/direct-io.c | |
| parent | 564884fbdecaea56fb65f2f32963059d3049b967 (diff) | |
| parent | 11e685672a0861ce136cc4e7f6fdd11e5390b1fa (diff) | |
Merge branch 'akpm' (patches from Andrew)
Merge misc updates and fixes from Andrew Morton:
- late-breaking ocfs2 updates
- random bunch of fixes
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm: disable DEFERRED_STRUCT_PAGE_INIT on !NO_BOOTMEM
mm/memcontrol.c: move comments for get_mctgt_type() to proper position
mm/memcontrol.c: fix the margin computation in mem_cgroup_margin()
mm/cma: silence warnings due to max() usage
mm: thp: avoid false positive VM_BUG_ON_PAGE in page_move_anon_rmap()
oom_reaper: close race with exiting task
mm: use early_pfn_to_nid in register_page_bootmem_info_node
mm: use early_pfn_to_nid in page_ext_init
MAINTAINERS: Kdump maintainers update
MAINTAINERS: add kexec_core.c and kexec_file.c
mm: oom: do not reap task if there are live threads in threadgroup
direct-io: fix direct write stale data exposure from concurrent buffered read
ocfs2: bump up o2cb network protocol version
ocfs2: o2hb: fix hb hung time
ocfs2: o2hb: don't negotiate if last hb fail
ocfs2: o2hb: add some user/debug log
ocfs2: o2hb: add NEGOTIATE_APPROVE message
ocfs2: o2hb: add NEGO_TIMEOUT message
ocfs2: o2hb: add negotiate timer
Diffstat (limited to 'fs/direct-io.c')
| -rw-r--r-- | fs/direct-io.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/fs/direct-io.c b/fs/direct-io.c index 3bf3f20f8ecc..f3b4408be590 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -628,11 +628,11 @@ static int get_more_blocks(struct dio *dio, struct dio_submit *sdio, map_bh->b_size = fs_count << i_blkbits; /* - * For writes inside i_size on a DIO_SKIP_HOLES filesystem we - * forbid block creations: only overwrites are permitted. - * We will return early to the caller once we see an - * unmapped buffer head returned, and the caller will fall - * back to buffered I/O. + * For writes that could fill holes inside i_size on a + * DIO_SKIP_HOLES filesystem we forbid block creations: only + * overwrites are permitted. We will return early to the caller + * once we see an unmapped buffer head returned, and the caller + * will fall back to buffered I/O. * * Otherwise the decision is left to the get_blocks method, * which may decide to handle it or also return an unmapped @@ -640,8 +640,8 @@ static int get_more_blocks(struct dio *dio, struct dio_submit *sdio, */ create = dio->rw & WRITE; if (dio->flags & DIO_SKIP_HOLES) { - if (sdio->block_in_file < (i_size_read(dio->inode) >> - sdio->blkbits)) + if (fs_startblk <= ((i_size_read(dio->inode) - 1) >> + i_blkbits)) create = 0; } |