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ext4: use ext4_da_writepages() for all modes

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Rename ext4_da_writepages() to ext4_writepages() and use it for all
modes.  We still need to iterate over all the pages in the case of
data=journalling, but in the case of nodelalloc/data=ordered (which is
what file systems mounted using ext3 backwards compatibility will use)
this will allow us to use a much more efficient I/O submission path.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o 2013-06-06 14:00:46 -04:00
commit 20970ba65d
2 changed files with 33 additions and 12 deletions
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4
include/trace/events/ext4.h
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@ -281,7 +281,7 @@ DEFINE_EVENT(ext4__write_end, ext4_da_write_end,
TP_ARGS(inode, pos, len, copied)
);
TRACE_EVENT(ext4_da_writepages,
TRACE_EVENT(ext4_writepages,
TP_PROTO(struct inode *inode, struct writeback_control *wbc),
TP_ARGS(inode, wbc),
@ -379,7 +379,7 @@ TRACE_EVENT(ext4_da_write_pages_extent,
__entry->flags)
);
TRACE_EVENT(ext4_da_writepages_result,
TRACE_EVENT(ext4_writepages_result,
TP_PROTO(struct inode *inode, struct writeback_control *wbc,
int ret, int pages_written),