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Date: Fri, 18 Nov 2011 18:55:30 +0800
From: Robin Dong <hao.bigrat@...il.com>
To: linux-ext4@...r.kernel.org
Cc: Robin Dong <sanbai@...bao.com>
Subject: [PATCH 5/5 bigalloc] e2fsprogs: make ext2fs_extent_set_bmap() to support cluster unit of ee_block and ee_len
From: Robin Dong <sanbai@...bao.com>
Signed-off-by: Robin Dong <sanbai@...bao.com>
---
lib/ext2fs/extent.c | 76 ++++++++++++++++++++++++++++++---------------------
1 files changed, 45 insertions(+), 31 deletions(-)
diff --git a/lib/ext2fs/extent.c b/lib/ext2fs/extent.c
index 32eb171..c646604 100644
--- a/lib/ext2fs/extent.c
+++ b/lib/ext2fs/extent.c
@@ -516,7 +516,7 @@ retry:
ix++;
end_blk = ext2fs_le32_to_cpu(ix->ei_block);
} else
- end_blk = path->end_blk;
+ end_blk = EXT2FS_B2C(handle->fs, path->end_blk);
extent->e_len = end_blk - extent->e_lblk;
}
@@ -854,7 +854,7 @@ static errcode_t extent_node_split(ext2_extent_handle_t handle)
/* save the position we were originally splitting... */
orig_height = info.max_depth - info.curr_level;
- orig_lblk = extent.e_lblk;
+ orig_lblk = EXT2FS_C2B(handle->fs, extent.e_lblk);
/* Is there room in the parent for a new entry? */
if (handle->level &&
@@ -1000,7 +1000,8 @@ static errcode_t extent_node_split(ext2_extent_handle_t handle)
extent.e_lblk = new_node_start;
extent.e_pblk = new_node_pblk;
- extent.e_len = handle->path[0].end_blk - extent.e_lblk;
+ extent.e_len = EXT2FS_B2C(handle->fs, handle->path[0].end_blk -
+ EXT2FS_C2B(handle->fs, extent.e_lblk));
retval = ext2fs_extent_replace(handle, 0, &extent);
if (retval)
goto done;
@@ -1157,6 +1158,7 @@ errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
struct ext2fs_extent extent, next_extent, prev_extent;
struct ext2fs_extent newextent;
struct ext2_extent_info info;
+ ext2_filsys fs = handle->fs;
EXT2_CHECK_MAGIC(handle, EXT2_ET_MAGIC_EXTENT_HANDLE);
@@ -1182,7 +1184,7 @@ errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
if (physical) {
newextent.e_len = 1;
newextent.e_pblk = physical;
- newextent.e_lblk = logical;
+ newextent.e_lblk = EXT2FS_B2C(handle->fs, logical);
newextent.e_flags = EXT2_EXTENT_FLAGS_LEAF;
if (new_uninit)
newextent.e_flags |= EXT2_EXTENT_FLAGS_UNINIT;
@@ -1204,7 +1206,7 @@ errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
if ((retval = ext2fs_extent_get_info(handle, &info)))
return retval;
orig_height = info.max_depth - info.curr_level;
- orig_lblk = extent.e_lblk;
+ orig_lblk = EXT2FS_C2B(handle->fs, extent.e_lblk);
/* go to the logical spot we want to (re/un)map */
retval = ext2fs_extent_goto(handle, logical);
@@ -1267,7 +1269,8 @@ errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
/* check if already pointing to the requested physical */
if (mapped && (new_uninit == extent_uninit) &&
- (extent.e_pblk + (logical - extent.e_lblk) == physical)) {
+ (extent.e_pblk + (logical - EXT2FS_C2B(handle->fs, extent.e_lblk))
+ == physical)) {
#ifdef DEBUG
printf("physical block (at %llu) unchanged\n", logical);
#endif
@@ -1278,25 +1281,30 @@ errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
#ifdef DEBUG
printf("mapping unmapped logical block %llu\n", logical);
#endif
- if ((logical == extent.e_lblk + extent.e_len) &&
- (physical == extent.e_pblk + extent.e_len) &&
+ if ((logical == EXT2FS_C2B(fs, extent.e_lblk + extent.e_len)) &&
+ (physical == extent.e_pblk +
+ EXT2FS_C2B(fs, extent.e_len)) &&
(new_uninit == extent_uninit) &&
- ((int) extent.e_len < max_len-1)) {
+ ((int) EXT2FS_C2B(fs, extent.e_len) < max_len - 1)) {
extent.e_len++;
retval = ext2fs_extent_replace(handle, 0, &extent);
- } else if ((logical == extent.e_lblk - 1) &&
- (physical == extent.e_pblk - 1) &&
+ } else if ((logical == EXT2FS_C2B(fs, extent.e_lblk - 1)) &&
+ (physical == extent.e_pblk -
+ EXT2FS_CLUSTER_RATIO(fs)) &&
(new_uninit == extent_uninit) &&
- ((int) extent.e_len < max_len - 1)) {
+ ((int) EXT2FS_C2B(fs, extent.e_len) < max_len - 1)) {
extent.e_len++;
extent.e_lblk--;
- extent.e_pblk--;
+ extent.e_pblk -= EXT2FS_CLUSTER_RATIO(fs);
retval = ext2fs_extent_replace(handle, 0, &extent);
} else if (has_next &&
- (logical == next_extent.e_lblk - 1) &&
- (physical == next_extent.e_pblk - 1) &&
+ (logical == EXT2FS_C2B(fs,
+ next_extent.e_lblk - 1)) &&
+ (physical == next_extent.e_pblk -
+ EXT2FS_CLUSTER_RATIO(fs)) &&
(new_uninit == next_uninit) &&
- ((int) next_extent.e_len < max_len - 1)) {
+ ((int) EXT2FS_C2B(fs, next_extent.e_len) <
+ max_len - 1)) {
retval = ext2fs_extent_get(handle,
EXT2_EXTENT_NEXT_LEAF,
&next_extent);
@@ -1304,9 +1312,9 @@ errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
goto done;
next_extent.e_len++;
next_extent.e_lblk--;
- next_extent.e_pblk--;
+ next_extent.e_pblk -= EXT2FS_CLUSTER_RATIO(fs);
retval = ext2fs_extent_replace(handle, 0, &next_extent);
- } else if (logical < extent.e_lblk)
+ } else if (logical < EXT2FS_C2B(fs, extent.e_lblk))
retval = ext2fs_extent_insert(handle, 0, &newextent);
else
retval = ext2fs_extent_insert(handle,
@@ -1316,7 +1324,8 @@ errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
retval = ext2fs_extent_fix_parents(handle);
if (retval)
goto done;
- } else if ((logical == extent.e_lblk) && (extent.e_len == 1)) {
+ } else if ((logical == EXT2FS_C2B(fs, extent.e_lblk)) &&
+ (extent.e_len == 1)) {
#ifdef DEBUG
printf("(re/un)mapping only block in extent\n");
#endif
@@ -1333,23 +1342,27 @@ errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
if (retval)
goto done;
- } else if (logical == extent.e_lblk + extent.e_len - 1) {
+ } else if (logical == EXT2FS_C2B(fs, extent.e_lblk +
+ extent.e_len - 1)) {
#ifdef DEBUG
printf("(re/un)mapping last block in extent\n");
#endif
if (physical) {
if (has_next &&
- (logical == (next_extent.e_lblk - 1)) &&
- (physical == (next_extent.e_pblk - 1)) &&
+ (logical == (EXT2FS_C2B(fs,
+ next_extent.e_lblk - 1))) &&
+ (physical == (next_extent.e_pblk -
+ EXT2FS_CLUSTER_RATIO(fs))) &&
(new_uninit == next_uninit) &&
- ((int) next_extent.e_len < max_len - 1)) {
+ ((int) EXT2FS_C2B(fs, next_extent.e_len) <
+ max_len - 1)) {
retval = ext2fs_extent_get(handle,
EXT2_EXTENT_NEXT_LEAF, &next_extent);
if (retval)
goto done;
next_extent.e_len++;
next_extent.e_lblk--;
- next_extent.e_pblk--;
+ next_extent.e_pblk -= EXT2FS_CLUSTER_RATIO(fs);
retval = ext2fs_extent_replace(handle, 0,
&next_extent);
if (retval)
@@ -1370,18 +1383,19 @@ errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
retval = ext2fs_extent_replace(handle, 0, &extent);
if (retval)
goto done;
- } else if (logical == extent.e_lblk) {
+ } else if (logical == EXT2FS_C2B(fs, extent.e_lblk)) {
#ifdef DEBUG
printf("(re/un)mapping first block in extent\n");
#endif
if (physical) {
if (has_prev &&
- (logical == (prev_extent.e_lblk +
+ (logical == EXT2FS_C2B(fs, prev_extent.e_lblk +
prev_extent.e_len)) &&
(physical == (prev_extent.e_pblk +
- prev_extent.e_len)) &&
+ EXT2FS_C2B(fs, prev_extent.e_len))) &&
(new_uninit == prev_uninit) &&
- ((int) prev_extent.e_len < max_len-1)) {
+ ((int) EXT2FS_C2B(fs, prev_extent.e_len) <
+ max_len - 1)) {
retval = ext2fs_extent_get(handle,
EXT2_EXTENT_PREV_LEAF, &prev_extent);
if (retval)
@@ -1400,7 +1414,7 @@ errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
if (retval)
goto done;
}
- extent.e_pblk++;
+ extent.e_pblk += EXT2FS_CLUSTER_RATIO(fs);
extent.e_lblk++;
extent.e_len--;
retval = ext2fs_extent_replace(handle, 0, &extent);
@@ -1417,7 +1431,7 @@ errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
orig_length = extent.e_len;
/* shorten pre-split extent */
- extent.e_len = (logical - extent.e_lblk);
+ extent.e_len = (EXT2FS_B2C(fs, logical) - extent.e_lblk);
retval = ext2fs_extent_replace(handle, 0, &extent);
if (retval)
goto done;
@@ -1430,7 +1444,7 @@ errcode_t ext2fs_extent_set_bmap(ext2_extent_handle_t handle,
goto done;
}
/* add post-split extent */
- extent.e_pblk += extent.e_len + 1;
+ extent.e_pblk += EXT2FS_C2B(fs, extent.e_len + 1);
extent.e_lblk += extent.e_len + 1;
extent.e_len = orig_length - extent.e_len - 1;
retval = ext2fs_extent_insert(handle,
--
1.7.3.2
--
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