mirror of
https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git
synced 2024-11-23 18:14:25 +08:00
c25ec972c9
Currently, basefs_allocator will iterate through blocks owned by an inode until it finds a block that is free. This effectively ignores the logical to physical block mapping, which can lead to a bigger delta in the final image. An example of how this can happen is if the BaseFS has a deduplicated block (D), that is not deduplicated in the new image: Old image: 1 2 3 D 4 5 New image: 1 2 3 ? 4 5 If the allocator sees that "D" is not usable, and skips to block "4", we will have a non-ideal assignment. Bad image: 1 2 3 4 5 ? This patch refactors get_next_block() to acquire at most one block. It's called a single time, and then only called in a loop if absolutely no blocks can be acquired from anywhere else. In a Virtual A/B simulation, this reduces the COW snapshot size by about 90MB. Bug: 139201772 Test: manual test Change-Id: I354f0dee1ee191dba0e1f90491ed591dba388f7f From AOSP commit: a495b54f89b2ec0e46be8e3564e4852c6434687c |
||
|---|---|---|
| config | ||
| contrib | ||
| debian | ||
| debugfs | ||
| doc | ||
| e2fsck | ||
| ext2ed | ||
| include | ||
| install-utils | ||
| intl | ||
| lib | ||
| misc | ||
| po | ||
| resize | ||
| scrub | ||
| tests | ||
| util | ||
| .gitignore | ||
| .missing-copyright | ||
| .release-checklist | ||
| ABOUT-NLS | ||
| acinclude.m4 | ||
| aclocal.m4 | ||
| Android.bp | ||
| CleanSpec.mk | ||
| configure | ||
| configure.ac | ||
| depfix.sed | ||
| e2fsprogs.lsm | ||
| e2fsprogs.spec | ||
| INSTALL | ||
| INSTALL.elfbin | ||
| Makefile.in | ||
| MCONFIG.in | ||
| NOTICE | ||
| README | ||
| RELEASE-NOTES | ||
| SHLIBS | ||
| SUBMITTING-PATCHES | ||
| version.h | ||
| wordwrap.pl | ||
This is the new version (1.45.5) of the second extended file system management programs. From time to time, I release new versions of e2fsprogs, to fix bugs and to make the utilities more robust. You can always find information about the latest version at the the e2fsprogs web page, which is: http://e2fsprogs.sourceforge.net The INSTALL file has instructions on building and installing e2fsprogs. Provisions for building Red Hat RPMs and Debian dpkg files are supplied as well. In case of bugs in these programs, please contact Ted Ts'o at tytso@mit.edu or tytso@alum.mit.edu. See the e2fsck man page for suggestions of what sort of information to include when submitting bug reports for these programs.