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f2fs: use kmap_atomic instead of kmap

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

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2014-10-18 23:41:38 -07:00
parent 062a3e7ba7
commit f1e33a041e
1 changed files with 8 additions and 9 deletions
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17
fs/f2fs/inline.c
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@ -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);