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author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-08-08 20:04:35 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-08-08 20:04:35 -0700 |
commit | f30adc0d332fdfe5315cb98bd6a7ff0d5cf2aa38 (patch) | |
tree | 27a82d8230b5c6462c1eb4f9ba3ff80ed0906229 /fs/hugetlbfs | |
parent | 5d5d353bed32dc3ea52e2619e0d1c60b17133b91 (diff) | |
parent | c03f05f183cd15f4259684ab658fbc3d23797d99 (diff) | |
download | linux-f30adc0d332fdfe5315cb98bd6a7ff0d5cf2aa38.tar.gz linux-f30adc0d332fdfe5315cb98bd6a7ff0d5cf2aa38.tar.bz2 linux-f30adc0d332fdfe5315cb98bd6a7ff0d5cf2aa38.zip |
Merge tag 'pull-work.iov_iter-rebased' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull more iov_iter updates from Al Viro:
- more new_sync_{read,write}() speedups - ITER_UBUF introduction
- ITER_PIPE cleanups
- unification of iov_iter_get_pages/iov_iter_get_pages_alloc and
switching them to advancing semantics
- making ITER_PIPE take high-order pages without splitting them
- handling copy_page_from_iter() for high-order pages properly
* tag 'pull-work.iov_iter-rebased' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (32 commits)
fix copy_page_from_iter() for compound destinations
hugetlbfs: copy_page_to_iter() can deal with compound pages
copy_page_to_iter(): don't split high-order page in case of ITER_PIPE
expand those iov_iter_advance()...
pipe_get_pages(): switch to append_pipe()
get rid of non-advancing variants
ceph: switch the last caller of iov_iter_get_pages_alloc()
9p: convert to advancing variant of iov_iter_get_pages_alloc()
af_alg_make_sg(): switch to advancing variant of iov_iter_get_pages()
iter_to_pipe(): switch to advancing variant of iov_iter_get_pages()
block: convert to advancing variants of iov_iter_get_pages{,_alloc}()
iov_iter: advancing variants of iov_iter_get_pages{,_alloc}()
iov_iter: saner helper for page array allocation
fold __pipe_get_pages() into pipe_get_pages()
ITER_XARRAY: don't open-code DIV_ROUND_UP()
unify the rest of iov_iter_get_pages()/iov_iter_get_pages_alloc() guts
unify xarray_get_pages() and xarray_get_pages_alloc()
unify pipe_get_pages() and pipe_get_pages_alloc()
iov_iter_get_pages(): sanity-check arguments
iov_iter_get_pages_alloc(): lift freeing pages array on failure exits into wrapper
...
Diffstat (limited to 'fs/hugetlbfs')
-rw-r--r-- | fs/hugetlbfs/inode.c | 31 |
1 files changed, 1 insertions, 30 deletions
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index fe0e374b02a3..f7a5b5124d8a 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -282,35 +282,6 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr, } #endif -static size_t -hugetlbfs_read_actor(struct page *page, unsigned long offset, - struct iov_iter *to, unsigned long size) -{ - size_t copied = 0; - int i, chunksize; - - /* Find which 4k chunk and offset with in that chunk */ - i = offset >> PAGE_SHIFT; - offset = offset & ~PAGE_MASK; - - while (size) { - size_t n; - chunksize = PAGE_SIZE; - if (offset) - chunksize -= offset; - if (chunksize > size) - chunksize = size; - n = copy_page_to_iter(&page[i], offset, chunksize, to); - copied += n; - if (n != chunksize) - return copied; - offset = 0; - size -= chunksize; - i++; - } - return copied; -} - /* * Support for read() - Find the page attached to f_mapping and copy out the * data. This provides functionality similar to filemap_read(). @@ -360,7 +331,7 @@ static ssize_t hugetlbfs_read_iter(struct kiocb *iocb, struct iov_iter *to) /* * We have the page, copy it to user space buffer. */ - copied = hugetlbfs_read_actor(page, offset, to, nr); + copied = copy_page_to_iter(page, offset, nr, to); put_page(page); } offset += copied; |