Andriy Gapon 3fd7f7bef7 zfs page_busy: fix the boundaries of the cleared range ... This is a fix for a regression introduced in r246293. vm_page_clear_dirty expects the range to have DEV_BSIZE aligned boundaries, otherwise it extends them. Thus it can happen that the whole page is marked clean while actually having some small dirty region(s). This commit makes the range properly aligned and ensures that only the clean data is marked as such. It would interesting to evaluate how much benefit clearing with DEV_BSIZE granularity produces. Perhaps instead we should clear the whole page when it is completely overwritten and don't bother clearing any bits if only a portion a page is written. Reported by: George Hartzell <hartzell@alerce.com>, Richard Todd <rmtodd@servalan.servalan.com> Tested by: George Hartzell <hartzell@alerce.com>, Reviewed by: kib MFC after: 5 days		2013-11-19 18:43:47 +00:00
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common	MFV r254750:	2013-09-21 00:17:26 +00:00
uts	zfs page_busy: fix the boundaries of the cleared range	2013-11-19 18:43:47 +00:00
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