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| author | Al Viro <viro@zeniv.linux.org.uk> | 2014-02-02 22:10:25 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-04-01 23:19:20 -0400 |
| commit | 9e8c2af96e0d2d5fe298dd796fb6bc16e888a48d (patch) | |
| tree | bd078fdfaf34ce0cb9ab258d39f0669b5610f5c8 /mm | |
| parent | c186afb4dbd0050a537b96c7fbee2dba3b57fc38 (diff) | |
| download | linux-0-day-9e8c2af96e0d2d5fe298dd796fb6bc16e888a48d.tar.gz linux-0-day-9e8c2af96e0d2d5fe298dd796fb6bc16e888a48d.tar.xz | |
callers of iov_copy_from_user_atomic() don't need pagecache_disable()
... it does that itself (via kmap_atomic())
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/filemap.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 46e98019af6c6..bfb7a97d6d0f0 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1974,7 +1974,6 @@ size_t iov_iter_copy_from_user_atomic(struct page *page, char *kaddr; size_t copied; - BUG_ON(!in_atomic()); kaddr = kmap_atomic(page); if (likely(i->nr_segs == 1)) { int left; @@ -2348,9 +2347,7 @@ again: if (mapping_writably_mapped(mapping)) flush_dcache_page(page); - pagefault_disable(); copied = iov_iter_copy_from_user_atomic(page, i, offset, bytes); - pagefault_enable(); flush_dcache_page(page); mark_page_accessed(page); |