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Subject[PATCH 2/5] jfs: stop using the nobh helper
Date
The nobh mode is an obscure feature to save lowlevel for large memory
32-bit configurations while trading for much slower performance and
has been long obsolete. Switch to the regular buffer head based helpers
instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/jfs/inode.c | 18 +++++++++++++++---
1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c
index 259326556ada6..d1ec920aa030a 100644
--- a/fs/jfs/inode.c
+++ b/fs/jfs/inode.c
@@ -301,13 +301,25 @@ static int jfs_write_begin(struct file *file, struct address_space *mapping,
{
int ret;

- ret = nobh_write_begin(mapping, pos, len, pagep, fsdata, jfs_get_block);
+ ret = block_write_begin(mapping, pos, len, pagep, jfs_get_block);
if (unlikely(ret))
jfs_write_failed(mapping, pos + len);

return ret;
}

+static int jfs_write_end(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned copied, struct page *page,
+ void *fsdata)
+{
+ int ret;
+
+ ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata);
+ if (ret < len)
+ jfs_write_failed(mapping, pos + len);
+ return ret;
+}
+
static sector_t jfs_bmap(struct address_space *mapping, sector_t block)
{
return generic_block_bmap(mapping, block, jfs_get_block);
@@ -346,7 +358,7 @@ const struct address_space_operations jfs_aops = {
.writepage = jfs_writepage,
.writepages = jfs_writepages,
.write_begin = jfs_write_begin,
- .write_end = nobh_write_end,
+ .write_end = jfs_write_end,
.bmap = jfs_bmap,
.direct_IO = jfs_direct_IO,
};
@@ -399,7 +411,7 @@ void jfs_truncate(struct inode *ip)
{
jfs_info("jfs_truncate: size = 0x%lx", (ulong) ip->i_size);

- nobh_truncate_page(ip->i_mapping, ip->i_size, jfs_get_block);
+ block_truncate_page(ip->i_mapping, ip->i_size, jfs_get_block);

IWRITE_LOCK(ip, RDWRLOCK_NORMAL);
jfs_truncate_nolock(ip, ip->i_size);
--
2.30.2
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