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[PATCH] reiserfs: add missing D-cache flushing [message #8309]

Tue, 14 November 2006 16:36

Alexey Dobriyan
Messages: 195
Registered: August 2006

Senior Member

Looks like, reiserfs_prepare_file_region_for_write() doesn't contain several
flush_dcache_page() calls.

With help from Dmitriy Monakhov.

Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
---

fs/reiserfs/file.c | 4 ++++
1 file changed, 4 insertions(+)

--- a/fs/reiserfs/file.c
+++ b/fs/reiserfs/file.c
@@ -1043,6 +1043,7 @@ static int reiserfs_prepare_file_region_
if (from != 0) { /* First page needs to be partially zeroed */
char *kaddr = kmap_atomic(prepared_pages[0], KM_USER0);
memset(kaddr, 0, from);
+ flush_dcache_page(prepared_pages[0]);
kunmap_atomic(kaddr, KM_USER0);
}
if (to != PAGE_CACHE_SIZE) { /* Last page needs to be partially zeroed */
@@ -1050,6 +1051,7 @@ static int reiserfs_prepare_file_region_
kmap_atomic(prepared_pages[num_pages - 1],
KM_USER0);
memset(kaddr + to, 0, PAGE_CACHE_SIZE - to);
+ flush_dcache_page(prepared_pages[num_pages - 1]);
kunmap_atomic(kaddr, KM_USER0);
}

@@ -1183,6 +1185,7 @@ static int reiserfs_prepare_file_region_
KM_USER0);
memset(kaddr + block_start, 0,
from - block_start);
+ flush_dcache_page(prepared_pages[0]);
kunmap_atomic(kaddr, KM_USER0);
set_buffer_uptodate(bh);
}
@@ -1220,6 +1223,7 @@ static int reiserfs_prepare_file_region_
[num_pages - 1],
KM_USER0);
memset(kaddr + to, 0, block_end - to);
+ flush_dcache_page(prepared_pages[num_pages - 1]);
kunmap_atomic(kaddr, KM_USER0);
set_buffer_uptodate(bh);
}

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