forked from luck/tmp_suning_uos_patched
[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: 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>
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@ -1045,6 +1045,7 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode
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char *kaddr = kmap_atomic(prepared_pages[0], KM_USER0);
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memset(kaddr, 0, from);
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kunmap_atomic(kaddr, KM_USER0);
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flush_dcache_page(prepared_pages[0]);
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}
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if (to != PAGE_CACHE_SIZE) { /* Last page needs to be partially zeroed */
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char *kaddr =
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@ -1052,6 +1053,7 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode
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KM_USER0);
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memset(kaddr + to, 0, PAGE_CACHE_SIZE - to);
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kunmap_atomic(kaddr, KM_USER0);
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flush_dcache_page(prepared_pages[num_pages - 1]);
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}
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/* Since all blocks are new - use already calculated value */
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@ -1185,6 +1187,7 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode
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memset(kaddr + block_start, 0,
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from - block_start);
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kunmap_atomic(kaddr, KM_USER0);
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flush_dcache_page(prepared_pages[0]);
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set_buffer_uptodate(bh);
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}
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}
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@ -1222,6 +1225,7 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode
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KM_USER0);
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memset(kaddr + to, 0, block_end - to);
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kunmap_atomic(kaddr, KM_USER0);
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flush_dcache_page(prepared_pages[num_pages - 1]);
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set_buffer_uptodate(bh);
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}
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}
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