f2fs: use kmap_atomic instead of kmap

For better performance, we need to use kmap_atomic instead of kmap.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 8 insertions, 9 deletions

diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index a30984505f16..024546b80fd0 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -55,11 +55,10 @@ int f2fs_read_inline_data(struct inode *inode, struct page *page)
 
         /* Copy the whole inline data block */
         src_addr = inline_data_addr(ipage);
-        dst_addr = kmap(page);
+        dst_addr = kmap_atomic(page);
         memcpy(dst_addr, src_addr, MAX_INLINE_DATA);
-        kunmap(page);
+        kunmap_atomic(dst_addr);
         f2fs_put_page(ipage, 1);
-
 out:
         SetPageUptodate(page);
         unlock_page(page);
@@ -105,9 +104,9 @@ static int __f2fs_convert_inline_data(struct inode *inode, struct page *page)
 
         /* Copy the whole inline data block */
         src_addr = inline_data_addr(ipage);
-        dst_addr = kmap(page);
+        dst_addr = kmap_atomic(page);
         memcpy(dst_addr, src_addr, MAX_INLINE_DATA);
-        kunmap(page);
+        kunmap_atomic(dst_addr);
         SetPageUptodate(page);
 
         /* write data page to try to make data consistent */
@@ -177,10 +176,10 @@ int f2fs_write_inline_data(struct inode *inode,
         f2fs_wait_on_page_writeback(ipage, NODE);
         zero_user_segment(ipage, INLINE_DATA_OFFSET,
                                  INLINE_DATA_OFFSET + MAX_INLINE_DATA);
-        src_addr = kmap(page);
+        src_addr = kmap_atomic(page);
         dst_addr = inline_data_addr(ipage);
         memcpy(dst_addr, src_addr, size);
-        kunmap(page);
+        kunmap_atomic(src_addr);
 
         set_inode_flag(F2FS_I(inode), FI_APPEND_WRITE);
         sync_inode_page(&dn);
@@ -351,7 +350,7 @@ int f2fs_convert_inline_dir(struct inode *dir, struct page *ipage,
         f2fs_wait_on_page_writeback(page, DATA);
         zero_user_segment(page, 0, PAGE_CACHE_SIZE);
 
-        dentry_blk = kmap(page);
+        dentry_blk = kmap_atomic(page);
 
         /* copy data from inline dentry block to new dentry block */
         memcpy(dentry_blk->dentry_bitmap, inline_dentry->dentry_bitmap,
@@ -361,7 +360,7 @@ int f2fs_convert_inline_dir(struct inode *dir, struct page *ipage,
         memcpy(dentry_blk->filename, inline_dentry->filename,
                                         NR_INLINE_DENTRY * F2FS_SLOT_LEN);
 
-        kunmap(page);
+        kunmap_atomic(dentry_blk);
         SetPageUptodate(page);
         set_page_dirty(page);