From: Vivek Goyal <vgoyal@redhat.com> To: linux-fsdevel@vger.kernel.org, linux-nvdimm@lists.01.org, hch@infradead.org, dan.j.williams@intel.com Cc: dm-devel@redhat.com, Christoph Hellwig <hch@lst.de> Subject: [PATCH v5 7/8] dax,iomap: Start using dax native zero_page_range() Date: Tue, 18 Feb 2020 16:48:40 -0500 [thread overview] Message-ID: <20200218214841.10076-8-vgoyal@redhat.com> (raw) In-Reply-To: <20200218214841.10076-1-vgoyal@redhat.com> Get rid of calling block device interface for zeroing in iomap dax zeroing path and use dax native zeroing interface instead. Suggested-by: Christoph Hellwig <hch@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Vivek Goyal <vgoyal@redhat.com> --- fs/dax.c | 45 +++++++++------------------------------------ 1 file changed, 9 insertions(+), 36 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index 35da144375a0..f8ae0a9984fa 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -1038,48 +1038,21 @@ static vm_fault_t dax_load_hole(struct xa_state *xas, return ret; } -static bool dax_range_is_aligned(struct block_device *bdev, - unsigned int offset, unsigned int length) -{ - unsigned short sector_size = bdev_logical_block_size(bdev); - - if (!IS_ALIGNED(offset, sector_size)) - return false; - if (!IS_ALIGNED(length, sector_size)) - return false; - - return true; -} - int __dax_zero_page_range(struct block_device *bdev, struct dax_device *dax_dev, sector_t sector, unsigned int offset, unsigned int size) { - if (dax_range_is_aligned(bdev, offset, size)) { - sector_t start_sector = sector + (offset >> 9); - - return blkdev_issue_zeroout(bdev, start_sector, - size >> 9, GFP_NOFS, 0); - } else { - pgoff_t pgoff; - long rc, id; - void *kaddr; + pgoff_t pgoff; + long rc, id; - rc = bdev_dax_pgoff(bdev, sector, PAGE_SIZE, &pgoff); - if (rc) - return rc; + rc = bdev_dax_pgoff(bdev, sector, PAGE_SIZE, &pgoff); + if (rc) + return rc; - id = dax_read_lock(); - rc = dax_direct_access(dax_dev, pgoff, 1, &kaddr, NULL); - if (rc < 0) { - dax_read_unlock(id); - return rc; - } - memset(kaddr + offset, 0, size); - dax_flush(dax_dev, kaddr + offset, size); - dax_read_unlock(id); - } - return 0; + id = dax_read_lock(); + rc = dax_zero_page_range(dax_dev, (pgoff << PAGE_SHIFT) + offset, size); + dax_read_unlock(id); + return rc; } EXPORT_SYMBOL_GPL(__dax_zero_page_range); -- 2.20.1 _______________________________________________ Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org To unsubscribe send an email to linux-nvdimm-leave@lists.01.org
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From: Vivek Goyal <vgoyal@redhat.com> To: linux-fsdevel@vger.kernel.org, linux-nvdimm@lists.01.org, hch@infradead.org, dan.j.williams@intel.com Cc: dm-devel@redhat.com, vishal.l.verma@intel.com, vgoyal@redhat.com, Christoph Hellwig <hch@lst.de> Subject: [PATCH v5 7/8] dax,iomap: Start using dax native zero_page_range() Date: Tue, 18 Feb 2020 16:48:40 -0500 [thread overview] Message-ID: <20200218214841.10076-8-vgoyal@redhat.com> (raw) In-Reply-To: <20200218214841.10076-1-vgoyal@redhat.com> Get rid of calling block device interface for zeroing in iomap dax zeroing path and use dax native zeroing interface instead. Suggested-by: Christoph Hellwig <hch@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Vivek Goyal <vgoyal@redhat.com> --- fs/dax.c | 45 +++++++++------------------------------------ 1 file changed, 9 insertions(+), 36 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index 35da144375a0..f8ae0a9984fa 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -1038,48 +1038,21 @@ static vm_fault_t dax_load_hole(struct xa_state *xas, return ret; } -static bool dax_range_is_aligned(struct block_device *bdev, - unsigned int offset, unsigned int length) -{ - unsigned short sector_size = bdev_logical_block_size(bdev); - - if (!IS_ALIGNED(offset, sector_size)) - return false; - if (!IS_ALIGNED(length, sector_size)) - return false; - - return true; -} - int __dax_zero_page_range(struct block_device *bdev, struct dax_device *dax_dev, sector_t sector, unsigned int offset, unsigned int size) { - if (dax_range_is_aligned(bdev, offset, size)) { - sector_t start_sector = sector + (offset >> 9); - - return blkdev_issue_zeroout(bdev, start_sector, - size >> 9, GFP_NOFS, 0); - } else { - pgoff_t pgoff; - long rc, id; - void *kaddr; + pgoff_t pgoff; + long rc, id; - rc = bdev_dax_pgoff(bdev, sector, PAGE_SIZE, &pgoff); - if (rc) - return rc; + rc = bdev_dax_pgoff(bdev, sector, PAGE_SIZE, &pgoff); + if (rc) + return rc; - id = dax_read_lock(); - rc = dax_direct_access(dax_dev, pgoff, 1, &kaddr, NULL); - if (rc < 0) { - dax_read_unlock(id); - return rc; - } - memset(kaddr + offset, 0, size); - dax_flush(dax_dev, kaddr + offset, size); - dax_read_unlock(id); - } - return 0; + id = dax_read_lock(); + rc = dax_zero_page_range(dax_dev, (pgoff << PAGE_SHIFT) + offset, size); + dax_read_unlock(id); + return rc; } EXPORT_SYMBOL_GPL(__dax_zero_page_range); -- 2.20.1
next prev parent reply other threads:[~2020-02-18 21:49 UTC|newest] Thread overview: 103+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-02-18 21:48 [PATCH v5 0/8] dax/pmem: Provide a dax operation to zero range of memory Vivek Goyal 2020-02-18 21:48 ` Vivek Goyal 2020-02-18 21:48 ` [PATCH v5 1/8] pmem: Add functions for reading/writing page to/from pmem Vivek Goyal 2020-02-18 21:48 ` Vivek Goyal 2020-02-18 21:48 ` [PATCH v5 2/8] drivers/pmem: Allow pmem_clear_poison() to accept arbitrary offset and len Vivek Goyal 2020-02-18 21:48 ` Vivek Goyal 2020-02-20 16:17 ` Christoph Hellwig 2020-02-20 16:17 ` Christoph Hellwig 2020-02-20 21:35 ` Jeff Moyer 2020-02-20 21:35 ` Jeff Moyer 2020-02-20 21:57 ` Vivek Goyal 2020-02-20 21:57 ` Vivek Goyal 2020-02-21 18:32 ` Jeff Moyer 2020-02-21 18:32 ` Jeff Moyer 2020-02-21 20:17 ` Vivek Goyal 2020-02-21 20:17 ` Vivek Goyal 2020-02-21 21:00 ` Dan Williams 2020-02-21 21:00 ` Dan Williams 2020-02-21 21:24 ` Vivek Goyal 2020-02-21 21:24 ` Vivek Goyal 2020-02-21 21:30 ` Dan Williams 2020-02-21 21:30 ` Dan Williams 2020-02-21 21:33 ` Jeff Moyer 2020-02-21 21:33 ` Jeff Moyer 2020-02-23 23:03 ` Dave Chinner 2020-02-23 23:03 ` Dave Chinner 2020-02-24 0:40 ` Dan Williams 2020-02-24 0:40 ` Dan Williams 2020-02-24 13:50 ` Jeff Moyer 2020-02-24 13:50 ` Jeff Moyer 2020-02-24 20:48 ` Dan Williams 2020-02-24 20:48 ` Dan Williams 2020-02-24 21:53 ` Jeff Moyer 2020-02-24 21:53 ` Jeff Moyer 2020-02-25 0:26 ` Dan Williams 2020-02-25 0:26 ` Dan Williams 2020-02-25 20:32 ` Jeff Moyer 2020-02-25 20:32 ` Jeff Moyer 2020-02-25 21:52 ` Dan Williams 2020-02-25 21:52 ` Dan Williams 2020-02-25 23:26 ` Jane Chu 2020-02-25 23:26 ` Jane Chu 2020-02-24 15:38 ` Vivek Goyal 2020-02-24 15:38 ` Vivek Goyal 2020-02-27 3:02 ` Dave Chinner 2020-02-27 3:02 ` Dave Chinner 2020-02-27 4:19 ` Dan Williams 2020-02-27 4:19 ` Dan Williams 2020-02-28 1:30 ` Dave Chinner 2020-02-28 1:30 ` Dave Chinner 2020-02-28 3:28 ` Dan Williams 2020-02-28 3:28 ` Dan Williams 2020-02-28 14:05 ` Christoph Hellwig 2020-02-28 14:05 ` Christoph Hellwig 2020-02-28 16:26 ` Dan Williams 2020-02-28 16:26 ` Dan Williams 2020-02-24 20:13 ` Vivek Goyal 2020-02-24 20:13 ` Vivek Goyal 2020-02-24 20:52 ` Dan Williams 2020-02-24 20:52 ` Dan Williams 2020-02-24 21:15 ` Vivek Goyal 2020-02-24 21:15 ` Vivek Goyal 2020-02-24 21:32 ` Dan Williams 2020-02-24 21:32 ` Dan Williams 2020-02-25 13:36 ` Vivek Goyal 2020-02-25 13:36 ` Vivek Goyal 2020-02-25 16:25 ` Dan Williams 2020-02-25 16:25 ` Dan Williams 2020-02-25 20:08 ` Vivek Goyal 2020-02-25 20:08 ` Vivek Goyal 2020-02-25 22:49 ` Dan Williams 2020-02-25 22:49 ` Dan Williams 2020-02-26 13:51 ` Vivek Goyal 2020-02-26 13:51 ` Vivek Goyal 2020-02-26 16:57 ` Vivek Goyal 2020-02-26 16:57 ` Vivek Goyal 2020-02-27 3:11 ` Dave Chinner 2020-02-27 3:11 ` Dave Chinner 2020-02-27 15:25 ` Vivek Goyal 2020-02-27 15:25 ` Vivek Goyal 2020-02-28 1:50 ` Dave Chinner 2020-02-28 1:50 ` Dave Chinner 2020-02-18 21:48 ` [PATCH v5 3/8] pmem: Enable pmem_do_write() to deal with arbitrary ranges Vivek Goyal 2020-02-18 21:48 ` Vivek Goyal 2020-02-20 16:17 ` Christoph Hellwig 2020-02-20 16:17 ` Christoph Hellwig 2020-02-18 21:48 ` [PATCH v5 4/8] dax, pmem: Add a dax operation zero_page_range Vivek Goyal 2020-02-18 21:48 ` Vivek Goyal 2020-03-31 19:38 ` Dan Williams 2020-03-31 19:38 ` Dan Williams 2020-04-01 13:15 ` Vivek Goyal 2020-04-01 13:15 ` Vivek Goyal 2020-04-01 16:14 ` Vivek Goyal 2020-04-01 16:14 ` Vivek Goyal 2020-02-18 21:48 ` [PATCH v5 5/8] s390,dcssblk,dax: Add dax zero_page_range operation to dcssblk driver Vivek Goyal 2020-02-18 21:48 ` Vivek Goyal 2020-02-18 21:48 ` [PATCH v5 6/8] dm,dax: Add dax zero_page_range operation Vivek Goyal 2020-02-18 21:48 ` Vivek Goyal 2020-02-18 21:48 ` Vivek Goyal [this message] 2020-02-18 21:48 ` [PATCH v5 7/8] dax,iomap: Start using dax native zero_page_range() Vivek Goyal 2020-02-18 21:48 ` [PATCH v5 8/8] dax,iomap: Add helper dax_iomap_zero() to zero a range Vivek Goyal 2020-02-18 21:48 ` Vivek Goyal 2020-04-25 11:31 ` [PATCH v5 8/8] dax, iomap: " neolift9
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