Commit de21c57b authored by Alexey Dobriyan's avatar Alexey Dobriyan Committed by Linus Torvalds
Browse files

[PATCH] reiserfs: add missing D-cache flushing 



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: default avatarAlexey Dobriyan <adobriyan@openvz.org>
Cc: Dmitriy Monakhov <dmonakhov@openvz.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 36027604

fs/reiserfs/file.c

+4 −0
Original line number Diff line number Diff line
@@ -1045,6 +1045,7 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode 
			char *kaddr = kmap_atomic(prepared_pages[0], KM_USER0);

			memset(kaddr, 0, from);

			kunmap_atomic(kaddr, KM_USER0);

			flush_dcache_page(prepared_pages[0]);

		}

		if (to != PAGE_CACHE_SIZE) {	/* Last page needs to be partially zeroed */

			char *kaddr =
@@ -1052,6 +1053,7 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode 
					KM_USER0);

			memset(kaddr + to, 0, PAGE_CACHE_SIZE - to);

			kunmap_atomic(kaddr, KM_USER0);

			flush_dcache_page(prepared_pages[num_pages - 1]);

		}



		/* 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,

					       from - block_start);

					kunmap_atomic(kaddr, KM_USER0);

					flush_dcache_page(prepared_pages[0]);

					set_buffer_uptodate(bh);

				}

			}
@@ -1222,6 +1225,7 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode 
							KM_USER0);

					memset(kaddr + to, 0, block_end - to);

					kunmap_atomic(kaddr, KM_USER0);

					flush_dcache_page(prepared_pages[num_pages - 1]);

					set_buffer_uptodate(bh);

				}

			}

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