[PATCHv1, RFC 29/33] ext4: handle huge pages in ext4_da_write_end()
From: Kirill A. Shutemov <hidden>
Date: 2016-07-26 00:35:31
Also in:
linux-block, linux-ext4, linux-fsdevel, lkml
Subsystem:
ext4 file system, filesystems (vfs and infrastructure), the rest · Maintainers:
"Theodore Ts'o", Alexander Viro, Christian Brauner, Linus Torvalds
Call ext4_da_should_update_i_disksize() for head page with offset relative to head page. Signed-off-by: Kirill A. Shutemov <redacted> --- fs/ext4/inode.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 3df2cea763ce..744bba046268 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c@@ -2998,7 +2998,6 @@ static int ext4_da_write_end(struct file *file, int ret = 0, ret2; handle_t *handle = ext4_journal_current_handle(); loff_t new_i_size; - unsigned long start, end; int write_mode = (int)(unsigned long)fsdata; if (write_mode == FALL_BACK_TO_NONDELALLOC)
@@ -3006,8 +3005,6 @@ static int ext4_da_write_end(struct file *file, len, copied, page, fsdata); trace_ext4_da_write_end(inode, pos, len, copied); - start = pos & (PAGE_SIZE - 1); - end = start + copied - 1; /* * generic_write_end() will run mark_inode_dirty() if i_size
@@ -3016,8 +3013,10 @@ static int ext4_da_write_end(struct file *file, */ new_i_size = pos + copied; if (copied && new_i_size > EXT4_I(inode)->i_disksize) { + struct page *head = compound_head(page); + unsigned long end = (pos & ~hpage_mask(head)) + copied - 1; if (ext4_has_inline_data(inode) || - ext4_da_should_update_i_disksize(page, end)) { + ext4_da_should_update_i_disksize(head, end)) { ext4_update_i_disksize(inode, new_i_size); /* We need to mark inode dirty even if * new_i_size is less that inode->i_size
--
2.8.1
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