Re: [f2fs-dev] [PATCH] f2fs: fix to migrate all curseg types during free_segment_range
Chao Yu via Linux-f2fs-devel <[email protected]>
| Newsgroups | net.sourceforge.lists.linux-f2fs-devel,org.kernel.vger.linux-kernel,org.kernel.vger.stable |
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| Message-ID | <[email protected]> |
On 8/20/26 02:06, Daeho Jeong wrote: > From: Daeho Jeong <[email protected]> > > In free_segment_range(), the curseg evacuation loop only iterates up to > NR_CURSEG_PERSIST_TYPE (0..5), missing non-persistent in-memory curseg > types such as CURSEG_COLD_DATA_PINNED and CURSEG_ALL_DATA_ATGC. > > Even though these in-memory curseg types are not saved in the on-disk > checkpoint header, they still occupy active physical segments at runtime. > If an active in-memory curseg happens to be allocated within the segment > range being truncated during filesystem shrink, failing to evacuate it > will cause subsequent writes to the curseg attempting out-of-bounds I/O > on the truncated storage range. > > Fix this by expanding the curseg evacuation loop upper bound to > NR_CURSEG_TYPE to ensure all active curseg types are safely migrated > out of the target range. > > Fixes: d0b9e42ab615 ("f2fs: introduce inmem curseg") > Cc: [email protected] > Signed-off-by: Daeho Jeong <[email protected]> > Signed-off-by: Sunmin Jeong <[email protected]> Reviewed-by: Chao Yu <[email protected]> Thanks, _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel