ovl: split ovl_want_write() into two helpers

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ovl_get_write_access() gets write access to upper mnt without taking
freeze protection on upper sb and ovl_start_write() only takes freeze
protection on upper sb.

These helpers will be used to breakup the large ovl_want_write() scope
during copy up into finer grained freeze protection scopes.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>

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Amir Goldstein 2023-08-16 12:18:15 +03:00

parent c002728f60

commit d08d3b3c2c

2 changed files with 30 additions and 0 deletions

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4

fs/overlayfs/overlayfs.h

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26

fs/overlayfs/util.c

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