[PATCH v4 0/2] man/man2/mremap.2: describe multiple mapping move, shrink

[Lorenzo Stoakes <lorenzo.stoakes@oracle.com>]

We have added new functionality to mremap() in Linux 6.17, permitting the
move of multiple VMAs when performing a move alone (that is - providing
MREMAP_MAYMOVE | MREMAP_FIXED flags and specifying old_size == new_size).

We document this new feature.

Additionally, we document previously undocumented behaviour around
shrinking of input VMA ranges which permits the input range to span
multiple VMAs.

v4:
* Update description of newly discovered mremap() behaviour to highlight the
  fact that, if in-place, [old_address, old_address + new_length) may span
  multiple VMAs also.
* Fix up commit message for 2/2 to correct typo on specified range.
* Added code sample to 1/2 as per Alejandro.

v3:
* Use more precise language around mremap() move description as per Jann.
* Fix some typos in commit messages.
https://lore.kernel.org/all/cover.1753795807.git.lorenzo.stoakes@oracle.com/

v2:
* Split out the two man page changes as requested by Alejandro.
https://lore.kernel.org/all/cover.1753711160.git.lorenzo.stoakes@oracle.com/

v1:
https://lore.kernel.org/all/20250723174634.75054-1-lorenzo.stoakes@oracle.com/

Lorenzo Stoakes (2):
  man/man2/mremap.2: describe multiple mapping move
  man/man2/mremap.2: describe previously undocumented shrink behaviour

 man/man2/mremap.2 | 111 +++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 100 insertions(+), 11 deletions(-)

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