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Subject[PATCH RFC PKS/PMEM 27/58] fs/ubifs: Utilize new kmap_thread()
Date
From: Ira Weiny <ira.weiny@intel.com>

The kmap() calls in this FS are localized to a single thread. To avoid
the over head of global PKRS updates use the new kmap_thread() call.

Cc: Richard Weinberger <richard@nod.at>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
fs/ubifs/file.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index b77d1637bbbc..a3537447a885 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -111,7 +111,7 @@ static int do_readpage(struct page *page)
ubifs_assert(c, !PageChecked(page));
ubifs_assert(c, !PagePrivate(page));

- addr = kmap(page);
+ addr = kmap_thread(page);

block = page->index << UBIFS_BLOCKS_PER_PAGE_SHIFT;
beyond = (i_size + UBIFS_BLOCK_SIZE - 1) >> UBIFS_BLOCK_SHIFT;
@@ -174,7 +174,7 @@ static int do_readpage(struct page *page)
SetPageUptodate(page);
ClearPageError(page);
flush_dcache_page(page);
- kunmap(page);
+ kunmap_thread(page);
return 0;

error:
@@ -182,7 +182,7 @@ static int do_readpage(struct page *page)
ClearPageUptodate(page);
SetPageError(page);
flush_dcache_page(page);
- kunmap(page);
+ kunmap_thread(page);
return err;
}

@@ -616,7 +616,7 @@ static int populate_page(struct ubifs_info *c, struct page *page,
dbg_gen("ino %lu, pg %lu, i_size %lld, flags %#lx",
inode->i_ino, page->index, i_size, page->flags);

- addr = zaddr = kmap(page);
+ addr = zaddr = kmap_thread(page);

end_index = (i_size - 1) >> PAGE_SHIFT;
if (!i_size || page->index > end_index) {
@@ -692,7 +692,7 @@ static int populate_page(struct ubifs_info *c, struct page *page,
SetPageUptodate(page);
ClearPageError(page);
flush_dcache_page(page);
- kunmap(page);
+ kunmap_thread(page);
*n = nn;
return 0;

@@ -700,7 +700,7 @@ static int populate_page(struct ubifs_info *c, struct page *page,
ClearPageUptodate(page);
SetPageError(page);
flush_dcache_page(page);
- kunmap(page);
+ kunmap_thread(page);
ubifs_err(c, "bad data node (block %u, inode %lu)",
page_block, inode->i_ino);
return -EINVAL;
@@ -918,7 +918,7 @@ static int do_writepage(struct page *page, int len)
/* Update radix tree tags */
set_page_writeback(page);

- addr = kmap(page);
+ addr = kmap_thread(page);
block = page->index << UBIFS_BLOCKS_PER_PAGE_SHIFT;
i = 0;
while (len) {
@@ -950,7 +950,7 @@ static int do_writepage(struct page *page, int len)
ClearPagePrivate(page);
ClearPageChecked(page);

- kunmap(page);
+ kunmap_thread(page);
unlock_page(page);
end_page_writeback(page);
return err;
--
2.28.0.rc0.12.gb6a658bd00c9
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