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authorChristoph Hellwig <hch@lst.de>2010-06-04 11:29:57 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2010-08-09 16:47:32 -0400
commit6e1db88d536adcbbfe562b2d4b7d6425784fff12 (patch)
tree8cfcb5a6190722db6249b2e4978f39247975abcf /fs/ext4
parentf4e420dc423148fba637af1ab618fa8896dfb2d6 (diff)
introduce __block_write_begin
Split up the block_write_begin implementation - __block_write_begin is a new trivial wrapper for block_prepare_write that always takes an already allocated page and can be either called from block_write_begin or filesystem code that already has a page allocated. Remove the handling of already allocated pages from block_write_begin after switching all callers that do it to __block_write_begin. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/inode.c11
1 files changed, 4 insertions, 7 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index d6a7701018a..3da3c9646e5 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1578,11 +1578,9 @@ retry:
*pagep = page;
if (ext4_should_dioread_nolock(inode))
- ret = block_write_begin(file, mapping, pos, len, flags, pagep,
- fsdata, ext4_get_block_write);
+ ret = __block_write_begin(page, pos, len, ext4_get_block_write);
else
- ret = block_write_begin(file, mapping, pos, len, flags, pagep,
- fsdata, ext4_get_block);
+ ret = __block_write_begin(page, pos, len, ext4_get_block);
if (!ret && ext4_should_journal_data(inode)) {
ret = walk_page_buffers(handle, page_buffers(page),
@@ -1593,7 +1591,7 @@ retry:
unlock_page(page);
page_cache_release(page);
/*
- * block_write_begin may have instantiated a few blocks
+ * __block_write_begin may have instantiated a few blocks
* outside i_size. Trim these off again. Don't need
* i_size_read because we hold i_mutex.
*
@@ -3185,8 +3183,7 @@ retry:
}
*pagep = page;
- ret = block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
- ext4_da_get_block_prep);
+ ret = __block_write_begin(page, pos, len, ext4_da_get_block_prep);
if (ret < 0) {
unlock_page(page);
ext4_journal_stop(handle);