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SubjectRe: mapped pages being truncated [was Re: 2.6.5-rc2-aa5]
Andrea Arcangeli <andrea@suse.de> wrote:
>
> here we go, my new debugging WARN_ON in in __remove_from_page_cache
> triggered just before the other one in page_remove_rmap, as I expected
> it was truncate removing pages from pagecache before all mappings were
> dropped:

XFS is doing peculiar things - xfs_setattr calls truncate_inode_pages()
before running vmtruncate().

xfs_setattr
->xfs_itruncate_start
->VOP_TOSS_PAGES
->fs_tosspages
->truncate_inode_pages


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