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| author | Lukas Czerner <lczerner@redhat.com> | 2013-05-28 03:32:35 (GMT) |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2013-05-28 03:32:35 (GMT) |
| commit | eb3544c6fc6642c9037817980d8a9dc9df44aa45 (patch) | |
| tree | ada51347e6dfe1bf5656d5ba6fc60feba941d007 /fs | |
| parent | 0713ed0cde76438d05849f1537d3aab46e099475 (diff) | |
| download | linux-eb3544c6fc6642c9037817980d8a9dc9df44aa45.tar.xz | |
Revert "ext4: fix fsx truncate failure"
This reverts commit 189e868fa8fdca702eb9db9d8afc46b5cb9144c9.
This commit reintroduces the use of ext4_block_truncate_page() in ext4
truncate operation instead of ext4_discard_partial_page_buffers().
The statement in the commit description that the truncate operation only
zero block unaligned portion of the last page is not exactly right,
since truncate_pagecache_range() also zeroes and invalidate the unaligned
portion of the page. Then there is no need to zero and unmap it once more
and ext4_block_truncate_page() was doing the right job, although we
still need to update the buffer head containing the last block, which is
exactly what ext4_block_truncate_page() is doing.
Moreover the problem described in the commit is fixed more properly with
commit
15291164b22a357cb211b618adfef4fa82fc0de3
jbd2: clear BH_Delay & BH_Unwritten in journal_unmap_buffer
This was tested on ppc64 machine with block size of 1024 bytes without
any problems.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext4/inode.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index e3d0fb9..a7f6b31 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3938,7 +3938,6 @@ void ext4_truncate(struct inode *inode) unsigned int credits; handle_t *handle; struct address_space *mapping = inode->i_mapping; - loff_t page_len; /* * There is a possibility that we're either freeing the inode @@ -3982,14 +3981,8 @@ void ext4_truncate(struct inode *inode) return; } - if (inode->i_size % PAGE_CACHE_SIZE != 0) { - page_len = PAGE_CACHE_SIZE - - (inode->i_size & (PAGE_CACHE_SIZE - 1)); - - if (ext4_discard_partial_page_buffers(handle, - mapping, inode->i_size, page_len, 0)) - goto out_stop; - } + if (inode->i_size & (inode->i_sb->s_blocksize - 1)) + ext4_block_truncate_page(handle, mapping, inode->i_size); /* * We add the inode to the orphan list, so that if this |