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ext4: mark group as trimmed only if it was fully scanned
commit d63c00e upstream. Otherwise nonaligned fstrim calls will works inconveniently for iterative scanners, for example: // trim [0,16MB] for group-1, but mark full group as trimmed fstrim -o $((1024*1024*128)) -l $((1024*1024*16)) ./m // handle [16MB,16MB] for group-1, do nothing because group already has the flag. fstrim -o $((1024*1024*144)) -l $((1024*1024*16)) ./m [ Update function documentation for ext4_trim_all_free -- TYT ] Signed-off-by: Dmitry Monakhov <dmtrmonakhov@yandex-team.ru> Link: https://lore.kernel.org/r/1650214995-860245-1-git-send-email-dmtrmonakhov@yandex-team.ru Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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