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| author | Mikulas Patocka <mikulas@twibright.com> | 2015-09-02 22:50:12 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-03 11:55:30 -0700 |
| commit | a64eefaac1c5cc8dbc6995228fe08a61b8e1d26b (patch) | |
| tree | 0945e739dbe805c12f5d24170ae8486f6df79a43 /fs/hpfs/file.c | |
| parent | 64291f7db5bd8150a74ad2036f1037e6a0428df2 (diff) | |
| download | op-kernel-dev-a64eefaac1c5cc8dbc6995228fe08a61b8e1d26b.zip op-kernel-dev-a64eefaac1c5cc8dbc6995228fe08a61b8e1d26b.tar.gz | |
hpfs: support hotfixes
When the OS/2 driver hits a disk write error, it writes the sector to
another location and adds the sector mapping to the hotfix map.
This patch makes the hpfs driver understand the hotfix map and remap
accesses accoring to it.
Signed-off-by: Mikulas Patocka <mikulas@twibright.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/hpfs/file.c')
| -rw-r--r-- | fs/hpfs/file.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/hpfs/file.c b/fs/hpfs/file.c index 7ca28d6..d3bcdd9 100644 --- a/fs/hpfs/file.c +++ b/fs/hpfs/file.c @@ -83,6 +83,11 @@ static int hpfs_get_block(struct inode *inode, sector_t iblock, struct buffer_he if (s) { if (bh_result->b_size >> 9 < n_secs) n_secs = bh_result->b_size >> 9; + n_secs = hpfs_search_hotfix_map_for_range(inode->i_sb, s, n_secs); + if (unlikely(!n_secs)) { + s = hpfs_search_hotfix_map(inode->i_sb, s); + n_secs = 1; + } map_bh(bh_result, inode->i_sb, s); bh_result->b_size = n_secs << 9; goto ret_0; @@ -101,7 +106,7 @@ static int hpfs_get_block(struct inode *inode, sector_t iblock, struct buffer_he inode->i_blocks++; hpfs_i(inode)->mmu_private += 512; set_buffer_new(bh_result); - map_bh(bh_result, inode->i_sb, s); + map_bh(bh_result, inode->i_sb, hpfs_search_hotfix_map(inode->i_sb, s)); ret_0: r = 0; ret_r: @@ -181,7 +186,7 @@ static int hpfs_write_end(struct file *file, struct address_space *mapping, static sector_t _hpfs_bmap(struct address_space *mapping, sector_t block) { - return generic_block_bmap(mapping,block,hpfs_get_block); + return generic_block_bmap(mapping, block, hpfs_get_block); } const struct address_space_operations hpfs_aops = { |
