diff options
| author | ngkaho1234 <ngkaho1234@gmail.com> | 2015-12-26 02:18:09 +0800 |
|---|---|---|
| committer | ngkaho1234 <ngkaho1234@gmail.com> | 2015-12-26 02:27:41 +0800 |
| commit | 46c3c339d15e69ac633e122b95861151d6af1c62 (patch) | |
| tree | 858e8aeeb3533d6a481f3f1feedb6f7725ce4f48 | |
| parent | 01423f78d01581812e8e1c018902af4a323d4c41 (diff) | |
ext4: make sure blocks are not contaminated with data in block cache.
| -rw-r--r-- | lwext4/ext4.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/lwext4/ext4.c b/lwext4/ext4.c index cd91034..54fe245 100644 --- a/lwext4/ext4.c +++ b/lwext4/ext4.c @@ -1497,6 +1497,10 @@ int ext4_fwrite(ext4_file *f, const void *buf, size_t size, size_t *wcnt) if (r != EOK) goto Finish; + r = ext4_block_flush_lba(f->mp->fs.bdev, fblk); + if (r != EOK) + goto Finish; + off = fblk * block_size + unalg; r = ext4_block_writebytes(f->mp->fs.bdev, off, u8_buf, len); if (r != EOK) @@ -1521,6 +1525,8 @@ int ext4_fwrite(ext4_file *f, const void *buf, size_t size, size_t *wcnt) fblock_count = 0; while (size >= block_size) { + uint32_t i; + while (iblk_idx < iblock_last) { if (iblk_idx < ifile_blocks) { r = ext4_fs_init_inode_dblk_idx(&ref, iblk_idx, @@ -1550,6 +1556,13 @@ int ext4_fwrite(ext4_file *f, const void *buf, size_t size, size_t *wcnt) fblock_count++; } + for (i = 0;i < fblock_count;i++) { + r = ext4_block_flush_lba(f->mp->fs.bdev, fblock_start + i); + if (r != EOK) + goto Finish; + + } + r = ext4_blocks_set_direct(f->mp->fs.bdev, u8_buf, fblock_start, fblock_count); if (r != EOK) @@ -1593,6 +1606,10 @@ int ext4_fwrite(ext4_file *f, const void *buf, size_t size, size_t *wcnt) goto out_fsize; } + r = ext4_block_flush_lba(f->mp->fs.bdev, fblk); + if (r != EOK) + goto Finish; + off = fblk * block_size; r = ext4_block_writebytes(f->mp->fs.bdev, off, u8_buf, size); if (r != EOK) |