From 58bda1da4b3c3ec6da8d0badaba12ce02839a241 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 2 Feb 2014 21:03:40 -0500 Subject: fuse/dev: use atomic maps Signed-off-by: Al Viro --- fs/fuse/dev.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'fs/fuse') diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index 0a648bb455ae..f90af6fe6884 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -669,13 +669,13 @@ static void fuse_copy_finish(struct fuse_copy_state *cs) if (!cs->write) { buf->ops->unmap(cs->pipe, buf, cs->mapaddr); } else { - kunmap(buf->page); + kunmap_atomic(cs->mapaddr); buf->len = PAGE_SIZE - cs->len; } cs->currbuf = NULL; cs->mapaddr = NULL; } else if (cs->mapaddr) { - kunmap(cs->pg); + kunmap_atomic(cs->mapaddr); if (cs->write) { flush_dcache_page(cs->pg); set_page_dirty_lock(cs->pg); @@ -706,7 +706,7 @@ static int fuse_copy_fill(struct fuse_copy_state *cs) BUG_ON(!cs->nr_segs); cs->currbuf = buf; - cs->mapaddr = buf->ops->map(cs->pipe, buf, 0); + cs->mapaddr = buf->ops->map(cs->pipe, buf, 1); cs->len = buf->len; cs->buf = cs->mapaddr + buf->offset; cs->pipebufs++; @@ -726,7 +726,7 @@ static int fuse_copy_fill(struct fuse_copy_state *cs) buf->len = 0; cs->currbuf = buf; - cs->mapaddr = kmap(page); + cs->mapaddr = kmap_atomic(page); cs->buf = cs->mapaddr; cs->len = PAGE_SIZE; cs->pipebufs++; @@ -745,7 +745,7 @@ static int fuse_copy_fill(struct fuse_copy_state *cs) return err; BUG_ON(err != 1); offset = cs->addr % PAGE_SIZE; - cs->mapaddr = kmap(cs->pg); + cs->mapaddr = kmap_atomic(cs->pg); cs->buf = cs->mapaddr + offset; cs->len = min(PAGE_SIZE - offset, cs->seglen); cs->seglen -= cs->len; -- cgit v1.2.1 From fbb32750a62df75d1ffea547f3908b21c5496d9f Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 2 Feb 2014 21:09:54 -0500 Subject: pipe: kill ->map() and ->unmap() all pipe_buffer_operations have the same instances of those... Signed-off-by: Al Viro --- fs/fuse/dev.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'fs/fuse') diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index f90af6fe6884..aac71ce373e4 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -667,7 +667,7 @@ static void fuse_copy_finish(struct fuse_copy_state *cs) struct pipe_buffer *buf = cs->currbuf; if (!cs->write) { - buf->ops->unmap(cs->pipe, buf, cs->mapaddr); + kunmap_atomic(cs->mapaddr); } else { kunmap_atomic(cs->mapaddr); buf->len = PAGE_SIZE - cs->len; @@ -706,7 +706,7 @@ static int fuse_copy_fill(struct fuse_copy_state *cs) BUG_ON(!cs->nr_segs); cs->currbuf = buf; - cs->mapaddr = buf->ops->map(cs->pipe, buf, 1); + cs->mapaddr = kmap_atomic(buf->page); cs->len = buf->len; cs->buf = cs->mapaddr + buf->offset; cs->pipebufs++; @@ -874,7 +874,7 @@ static int fuse_try_move_page(struct fuse_copy_state *cs, struct page **pagep) out_fallback_unlock: unlock_page(newpage); out_fallback: - cs->mapaddr = buf->ops->map(cs->pipe, buf, 1); + cs->mapaddr = kmap_atomic(buf->page); cs->buf = cs->mapaddr + buf->offset; err = lock_request(cs->fc, cs->req); -- cgit v1.2.1 From 9e8c2af96e0d2d5fe298dd796fb6bc16e888a48d Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 2 Feb 2014 22:10:25 -0500 Subject: callers of iov_copy_from_user_atomic() don't need pagecache_disable() ... it does that itself (via kmap_atomic()) Signed-off-by: Al Viro --- fs/fuse/file.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'fs/fuse') diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 77bcc303c3ae..a91d3b4d32f3 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1003,9 +1003,7 @@ static ssize_t fuse_fill_write_pages(struct fuse_req *req, if (mapping_writably_mapped(mapping)) flush_dcache_page(page); - pagefault_disable(); tmp = iov_iter_copy_from_user_atomic(page, ii, offset, bytes); - pagefault_enable(); flush_dcache_page(page); mark_page_accessed(page); -- cgit v1.2.1 From 5cb6c6c7eb1ed24744b41fad47d9a25b72207098 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 11 Feb 2014 20:58:20 -0500 Subject: generic_file_direct_write(): get rid of ppos argument always equal to &iocb->ki_pos. Signed-off-by: Al Viro --- fs/fuse/file.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'fs/fuse') diff --git a/fs/fuse/file.c b/fs/fuse/file.c index a91d3b4d32f3..fd06d1ebc2eb 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1143,8 +1143,7 @@ static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov, goto out; if (file->f_flags & O_DIRECT) { - written = generic_file_direct_write(iocb, iov, &nr_segs, - pos, &iocb->ki_pos, + written = generic_file_direct_write(iocb, iov, &nr_segs, pos, count, ocount); if (written < 0 || written == count) goto out; -- cgit v1.2.1