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| author | Christoph Hellwig <hch@infradead.org> | 2010-06-24 09:46:01 +1000 |
|---|---|---|
| committer | Alex Elder <aelder@sgi.com> | 2010-07-26 13:16:41 -0500 |
| commit | 20cb52ebd1b5ca6fa8a5d9b6b1392292f5ca8a45 (patch) | |
| tree | c4644ab4b8b12d2c6100fb47c7dfa4c5949107ca /fs/xfs/linux-2.6/xfs_trace.h | |
| parent | 89f3b363967a958e756a549c8747c1fb9c930c1a (diff) | |
| download | kernel_samsung_smdk4412-20cb52ebd1b5ca6fa8a5d9b6b1392292f5ca8a45.zip kernel_samsung_smdk4412-20cb52ebd1b5ca6fa8a5d9b6b1392292f5ca8a45.tar.gz kernel_samsung_smdk4412-20cb52ebd1b5ca6fa8a5d9b6b1392292f5ca8a45.tar.bz2 | |
xfs: simplify xfs_vm_writepage
The writepage implementation in XFS still tries to deal with dirty but
unmapped buffers which used to caused by writes through shared mmaps. Since
the introduction of ->page_mkwrite these can't happen anymore, so remove the
code dealing with them.
Note that the all_bh variable which causes us to start I/O on all buffers on
the pages was controlled by the count of unmapped buffers, which also
included those not actually dirty. It's now unconditionally initialized to
0 but set to 1 for the case of small file size extensions. It probably can
be removed entirely, but that's left for another patch.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/linux-2.6/xfs_trace.h')
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_trace.h | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/fs/xfs/linux-2.6/xfs_trace.h b/fs/xfs/linux-2.6/xfs_trace.h index 0aea6d5..3f2eec2 100644 --- a/fs/xfs/linux-2.6/xfs_trace.h +++ b/fs/xfs/linux-2.6/xfs_trace.h @@ -832,33 +832,29 @@ DECLARE_EVENT_CLASS(xfs_page_class, __field(loff_t, size) __field(unsigned long, offset) __field(int, delalloc) - __field(int, unmapped) __field(int, unwritten) ), TP_fast_assign( - int delalloc = -1, unmapped = -1, unwritten = -1; + int delalloc = -1, unwritten = -1; if (page_has_buffers(page)) - xfs_count_page_state(page, &delalloc, - &unmapped, &unwritten); + xfs_count_page_state(page, &delalloc, &unwritten); __entry->dev = inode->i_sb->s_dev; __entry->ino = XFS_I(inode)->i_ino; __entry->pgoff = page_offset(page); __entry->size = i_size_read(inode); __entry->offset = off; __entry->delalloc = delalloc; - __entry->unmapped = unmapped; __entry->unwritten = unwritten; ), TP_printk("dev %d:%d ino 0x%llx pgoff 0x%lx size 0x%llx offset %lx " - "delalloc %d unmapped %d unwritten %d", + "delalloc %d unwritten %d", MAJOR(__entry->dev), MINOR(__entry->dev), __entry->ino, __entry->pgoff, __entry->size, __entry->offset, __entry->delalloc, - __entry->unmapped, __entry->unwritten) ) |