Re: [PATCH 1/3] ext4: return the extent cache information via fiemap

[PATCH 1/3] ext4: return the extent cache information via fiemap · "Theodore Ts'o" <tytso@mit.edu> · 2019-08-09
[PATCH 3/3] ext4: add a new ioctl EXT4_IOC_GETSTATE · "Theodore Ts'o" <tytso@mit.edu> · 2019-08-09
Re: [PATCH 3/3] ext4: add a new ioctl EXT4_IOC_GETSTATE · Eric Biggers <ebiggers@kernel.org> · 2019-08-09
Re: [PATCH 3/3] ext4: add a new ioctl EXT4_IOC_GETSTATE · "Theodore Y. Ts'o" <tytso@mit.edu> · 2019-08-10
Re: [PATCH 3/3] ext4: add a new ioctl EXT4_IOC_GETSTATE · Eric Biggers <ebiggers@kernel.org> · 2019-08-11
[PATCH 2/3] ext4: add a new ioctl EXT4_IOC_CLEAR_ES_CACHE · "Theodore Ts'o" <tytso@mit.edu> · 2019-08-09
Re: [PATCH 1/3] ext4: return the extent cache information via fiemap · Christoph Hellwig <hch@infradead.org> · 2019-08-10
Re: [PATCH 1/3] ext4: return the extent cache information via fiemap · "Theodore Y. Ts'o" <tytso@mit.edu> · 2019-08-11
Re: [PATCH 1/3] ext4: return the extent cache information via fiemap · Christoph Hellwig <hch@infradead.org> · 2019-08-12

From: Christoph Hellwig <hch@infradead.org>
Date: 2019-08-10 07:34:05
Also in: linux-fsdevel

On Fri, Aug 09, 2019 at 02:18:29PM -0400, Theodore Ts'o wrote:

For debugging reasons, it's useful to know the contents of the extent
cache.  Since the extent cache contains much of what is in the fiemap
ioctl, extend the fiemap interface to return this information via some
ext4-specific flags.

Nak.  No weird fs specific fiemap flags that aren't even in the uapi
header.  Please provide your own debug only interface.

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