diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2025-07-18 20:53:57 +0100 |
|---|---|---|
| committer | Konstantin Komarov <almaz.alexandrovich@paragon-software.com> | 2025-10-17 16:45:35 +0200 |
| commit | 953b79a7a124c3dae86544cea581a5bc7655aa13 (patch) | |
| tree | 0d4b839dae66668d206869edca4f5a0578cce9b9 /fs/ntfs3 | |
| parent | 14656154d26cf244d063477a03606775eec19780 (diff) | |
ntfs: Do not kmap page cache pages for compression
These pages are accessed through vmap; they are not accessed
by calling page_address(), so they do not need to be kmapped.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Diffstat (limited to 'fs/ntfs3')
| -rw-r--r-- | fs/ntfs3/frecord.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c index 784291ae04e6..e1832b66718f 100644 --- a/fs/ntfs3/frecord.c +++ b/fs/ntfs3/frecord.c @@ -2407,9 +2407,6 @@ int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages, * To simplify decompress algorithm do vmap for source * and target pages. */ - for (i = 0; i < pages_per_frame; i++) - kmap(pages[i]); - frame_size = pages_per_frame << PAGE_SHIFT; frame_mem = vmap(pages, pages_per_frame, VM_MAP, PAGE_KERNEL); if (!frame_mem) { @@ -2655,7 +2652,6 @@ out1: out: for (i = 0; i < pages_per_frame; i++) { pg = pages[i]; - kunmap(pg); SetPageUptodate(pg); } @@ -2742,9 +2738,6 @@ int ni_write_frame(struct ntfs_inode *ni, struct page **pages, goto out1; } - for (i = 0; i < pages_per_frame; i++) - kmap(pages[i]); - /* Map in-memory frame for read-only. */ frame_mem = vmap(pages, pages_per_frame, VM_MAP, PAGE_KERNEL_RO); if (!frame_mem) { @@ -2810,11 +2803,7 @@ int ni_write_frame(struct ntfs_inode *ni, struct page **pages, out3: vunmap(frame_mem); - out2: - for (i = 0; i < pages_per_frame; i++) - kunmap(pages[i]); - vunmap(frame_ondisk); out1: for (i = 0; i < pages_per_frame; i++) { |