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ocfs2: code clean up for direct io

Telusuri Sumber 
Clean up ocfs2_file_write_iter & ocfs2_prepare_inode_for_write:
 * remove append dio check: it will be checked in ocfs2_direct_IO()
 * remove file hole check: file hole is supported for now
 * remove inline data check: it will be checked in ocfs2_direct_IO()
 * remove the full_coherence check when append dio: we will get the
   inode_lock in ocfs2_dio_get_block, there is no need to fall back to
   buffer io to ensure the coherence semantics.

Now the drop dio procedure is gone.  :)

[akpm@linux-foundation.org: remove unused label]
Signed-off-by: Ryan Ding <ryan.ding@oracle.com>
Reviewed-by: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ryan Ding
2016-03-25 14:21:12 -07:00
committed by Linus Torvalds
orang tua c15471f795
melakukan f1f973ffce
2 mengubah file dengan 10 tambahan dan 144 penghapusan
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16
fs/ocfs2/ocfs2_trace.h
Melihat File

@@ -1450,28 +1450,20 @@ DEFINE_OCFS2_ULL_ULL_ULL_EVENT(ocfs2_remove_inode_range);
TRACE_EVENT(ocfs2_prepare_inode_for_write,
TP_PROTO(unsigned long long ino, unsigned long long saved_pos,
int appending, unsigned long count,
int *direct_io, int *has_refcount),
TP_ARGS(ino, saved_pos, appending, count, direct_io, has_refcount),
unsigned long count),
TP_ARGS(ino, saved_pos, count),
TP_STRUCT__entry(
__field(unsigned long long, ino)
__field(unsigned long long, saved_pos)
__field(int, appending)
__field(unsigned long, count)
__field(int, direct_io)
__field(int, has_refcount)
),
TP_fast_assign(
__entry->ino = ino;
__entry->saved_pos = saved_pos;
__entry->appending = appending;
__entry->count = count;
__entry->direct_io = direct_io ? *direct_io : -1;
__entry->has_refcount = has_refcount ? *has_refcount : -1;
),
TP_printk("%llu %llu %d %lu %d %d", __entry->ino,
__entry->saved_pos, __entry->appending, __entry->count,
__entry->direct_io, __entry->has_refcount)
TP_printk("%llu %llu %lu", __entry->ino,
__entry->saved_pos, __entry->count)
);
DEFINE_OCFS2_INT_EVENT(generic_file_aio_read_ret);