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[PATCH] reiserfs: add missing D-cache flushing

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

Found with help from Dmitriy Monakhov <dmonakhov@openvz.org>

[akpm@osdl.org: small speedup]
Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Cc: Dmitriy Monakhov <dmonakhov@openvz.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Alexey Dobriyan 2006-12-06 20:38:02 -08:00 committed by Linus Torvalds
parent 360276042d
commit de21c57b90
1 changed files with 4 additions and 0 deletions
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4
fs/reiserfs/file.c
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@ -1045,6 +1045,7 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode
char *kaddr = kmap_atomic(prepared_pages[0], KM_USER0); char *kaddr = kmap_atomic(prepared_pages[0], KM_USER0);
memset(kaddr, 0, from); memset(kaddr, 0, from);
kunmap_atomic(kaddr, KM_USER0); kunmap_atomic(kaddr, KM_USER0);
flush_dcache_page(prepared_pages[0]);
} }
if (to != PAGE_CACHE_SIZE) { /* Last page needs to be partially zeroed */ if (to != PAGE_CACHE_SIZE) { /* Last page needs to be partially zeroed */
char *kaddr = char *kaddr =
@ -1052,6 +1053,7 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode
KM_USER0); KM_USER0);
memset(kaddr + to, 0, PAGE_CACHE_SIZE - to); memset(kaddr + to, 0, PAGE_CACHE_SIZE - to);
kunmap_atomic(kaddr, KM_USER0); kunmap_atomic(kaddr, KM_USER0);
flush_dcache_page(prepared_pages[num_pages - 1]);
} }
/* Since all blocks are new - use already calculated value */ /* Since all blocks are new - use already calculated value */
@ -1185,6 +1187,7 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode
memset(kaddr + block_start, 0, memset(kaddr + block_start, 0,
from - block_start); from - block_start);
kunmap_atomic(kaddr, KM_USER0); kunmap_atomic(kaddr, KM_USER0);
flush_dcache_page(prepared_pages[0]);
set_buffer_uptodate(bh); set_buffer_uptodate(bh);
} }
} }
@ -1222,6 +1225,7 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode
KM_USER0); KM_USER0);
memset(kaddr + to, 0, block_end - to); memset(kaddr + to, 0, block_end - to);
kunmap_atomic(kaddr, KM_USER0); kunmap_atomic(kaddr, KM_USER0);
flush_dcache_page(prepared_pages[num_pages - 1]);
set_buffer_uptodate(bh); set_buffer_uptodate(bh);
} }
} }