Messages in this thread Patch in this message | | | From | Jan Kara <> | Subject | [PATCH 14/26] nfs: Convert direct IO to use get_user_pages_fast() | Date | Wed, 2 Oct 2013 16:27:55 +0200 |
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CC: Trond Myklebust <Trond.Myklebust@netapp.com> CC: linux-nfs@vger.kernel.org Signed-off-by: Jan Kara <jack@suse.cz> --- fs/nfs/direct.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 91ff089d3412..1aaf4aa2b3d7 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -337,10 +337,8 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_pageio_descriptor *de if (!pagevec) break; if (uio) { - down_read(¤t->mm->mmap_sem); - result = get_user_pages(current, current->mm, user_addr, - npages, 1, 0, pagevec, NULL); - up_read(¤t->mm->mmap_sem); + result = get_user_pages_fast(user_addr, npages, 1, + pagevec); if (result < 0) break; } else { @@ -658,10 +656,8 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_pageio_descriptor *d break; if (uio) { - down_read(¤t->mm->mmap_sem); - result = get_user_pages(current, current->mm, user_addr, - npages, 0, 0, pagevec, NULL); - up_read(¤t->mm->mmap_sem); + result = get_user_pages_fast(user_addr, npages, 0, + pagevec); if (result < 0) break; } else { -- 1.8.1.4
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