From 4b70df181611012a3556f017b57dfcef7e1d279f Mon Sep 17 00:00:00 2001 From: Mingming Date: Tue, 3 Nov 2009 14:44:54 -0500 Subject: [PATCH] ext4: code clean up for dio fallocate handling The ext4_debug() call in ext4_end_io_dio() should be moved after the check to make sure that io_end is non-NULL. The comment above ext4_get_block_dio_write() ("Maximum number of blocks...") is a duplicate; the original and correct comment is above the #define DIO_MAX_BLOCKS up above. Based on review comments from Curt Wohlgemuth. Signed-off-by: Mingming Cao Signed-off-by: "Theodore Ts'o" --- fs/ext4/inode.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index a9ed2bce74d1..2c8caa51addb 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3446,8 +3446,6 @@ static ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb, return ret; } -/* Maximum number of blocks we map for direct IO at once. */ - static int ext4_get_block_dio_write(struct inode *inode, sector_t iblock, struct buffer_head *bh_result, int create) { @@ -3655,13 +3653,14 @@ static void ext4_end_io_dio(struct kiocb *iocb, loff_t offset, ext4_io_end_t *io_end = iocb->private; struct workqueue_struct *wq; + /* if not async direct IO or dio with 0 bytes write, just return */ + if (!io_end || !size) + return; + ext_debug("ext4_end_io_dio(): io_end 0x%p" "for inode %lu, iocb 0x%p, offset %llu, size %llu\n", iocb->private, io_end->inode->i_ino, iocb, offset, size); - /* if not async direct IO or dio with 0 bytes write, just return */ - if (!io_end || !size) - return; /* if not aio dio with unwritten extents, just free io and return */ if (io_end->flag != DIO_AIO_UNWRITTEN){ -- GitLab