Re: [PATCH] ext4: remove unneeded check of nr_to_submit

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On 3/16/23 9:58 PM, Eric Biggers wrote:
On Thu, Mar 16, 2023 at 04:48:31PM -0400, Tom Rix wrote:
cppcheck reports
fs/ext4/page-io.c:516:51: style:
   Condition 'nr_to_submit' is always true [knownConditionTrueFalse]
  if (fscrypt_inode_uses_fs_layer_crypto(inode) && nr_to_submit) {
                                                   ^
This earlier check to bail, makes this check unncessary
	/* Nothing to submit? Just unlock the page... */
	if (!nr_to_submit)
		return 0;

Signed-off-by: Tom Rix <trix@xxxxxxxxxx>
Maybe add:

Fixes: dff4ac75eeee ("ext4: move keep_towrite handling to ext4_bio_write_page()")

The rule of thumb I use is 'would this require a recompile?'

In this case, the existing code will work, so no fixes:

Tom

Either way, looks good to me.

Reviewed-by: Eric Biggers <ebiggers@xxxxxxxxxx>

- Eric





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