Hi Shaohua, Today's linux-next merge of the md tree got a conflict in: drivers/md/md.h between commit: 3deff1a70d59 ("md: support REQ_OP_WRITE_ZEROES") from the block tree and commits: d8e29fbc3bed ("md: move two macros into md.h") 513e2faa0138 ("md: prepare for managing resync I/O pages in clean way") from the md tree. I fixed it up (see below) and can carry the fix as necessary. This is now fixed as far as linux-next is concerned, but any non trivial conflicts should be mentioned to your upstream maintainer when your tree is submitted for merging. You may also want to consider cooperating with the maintainer of the conflicting tree to minimise any particularly complex conflicts. -- Cheers, Stephen Rothwell diff --cc drivers/md/md.h index 1e76d64ce180,0418b29945e7..000000000000 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@@ -710,10 -719,58 +719,65 @@@ static inline void mddev_check_writesam mddev->queue->limits.max_write_same_sectors = 0; } +static inline void mddev_check_write_zeroes(struct mddev *mddev, struct bio *bio) +{ + if (bio_op(bio) == REQ_OP_WRITE_ZEROES && + !bdev_get_queue(bio->bi_bdev)->limits.max_write_zeroes_sectors) + mddev->queue->limits.max_write_zeroes_sectors = 0; +} ++ + /* Maximum size of each resync request */ + #define RESYNC_BLOCK_SIZE (64*1024) + #define RESYNC_PAGES ((RESYNC_BLOCK_SIZE + PAGE_SIZE-1) / PAGE_SIZE) + + /* for managing resync I/O pages */ + struct resync_pages { + unsigned idx; /* for get/put page from the pool */ + void *raid_bio; + struct page *pages[RESYNC_PAGES]; + }; + + static inline int resync_alloc_pages(struct resync_pages *rp, + gfp_t gfp_flags) + { + int i; + + for (i = 0; i < RESYNC_PAGES; i++) { + rp->pages[i] = alloc_page(gfp_flags); + if (!rp->pages[i]) + goto out_free; + } + + return 0; + + out_free: + while (--i >= 0) + put_page(rp->pages[i]); + return -ENOMEM; + } + + static inline void resync_free_pages(struct resync_pages *rp) + { + int i; + + for (i = 0; i < RESYNC_PAGES; i++) + put_page(rp->pages[i]); + } + + static inline void resync_get_all_pages(struct resync_pages *rp) + { + int i; + + for (i = 0; i < RESYNC_PAGES; i++) + get_page(rp->pages[i]); + } + + static inline struct page *resync_fetch_page(struct resync_pages *rp, + unsigned idx) + { + if (WARN_ON_ONCE(idx >= RESYNC_PAGES)) + return NULL; + return rp->pages[idx]; + } + #endif /* _MD_MD_H */ -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html