ext4: add new ioctl EXT4_IOC_GET_ES_CACHE

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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, use an fiemap-style interface to return this information.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>

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This commit is contained in:

Theodore Ts'o 2019-08-11 16:32:41 -04:00

parent 1ad3ea6e0a

commit bb5835edcd

6 changed files with 182 additions and 11 deletions

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10

fs/ext4/ext4.h

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94

fs/ext4/extents.c

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10

fs/ext4/extents_status.c

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1

fs/ext4/extents_status.h

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6

fs/ext4/inode.c

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72

fs/ext4/ioctl.c

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