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| author | Zach Brown <zach.brown@oracle.com> | 2006-10-11 01:21:08 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-11 11:14:16 -0700 |
| commit | b517bea1c74e4773482b3f41b3f493522a8c8e30 (patch) | |
| tree | 1e98110151f1a35cde84ce1a2cb6f0cb871e9551 /fs/jbd2/commit.c | |
| parent | d0d856e8bd6e697cb44b2b4dd038f3bec576a70e (diff) | |
| download | lwn-b517bea1c74e4773482b3f41b3f493522a8c8e30.tar.gz lwn-b517bea1c74e4773482b3f41b3f493522a8c8e30.zip | |
[PATCH] 64-bit jbd2 core
Here is the patch to JBD to handle 64 bit block numbers, originally from Zach
Brown. This patch is useful only after adding support for 64-bit block
numbers in the filesystem.
Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Zach Brown <zach.brown@oracle.com>
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/jbd2/commit.c')
| -rw-r--r-- | fs/jbd2/commit.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index b1a4eafc1541..44d68a113c73 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -271,6 +271,14 @@ write_out_data: journal_do_submit_data(wbuf, bufs); } +static inline void write_tag_block(int tag_bytes, journal_block_tag_t *tag, + sector_t block) +{ + tag->t_blocknr = cpu_to_be32(block & (u32)~0); + if (tag_bytes > JBD_TAG_SIZE32) + tag->t_blocknr_high = cpu_to_be32((block >> 31) >> 1); +} + /* * jbd2_journal_commit_transaction * @@ -293,6 +301,7 @@ void jbd2_journal_commit_transaction(journal_t *journal) int first_tag = 0; int tag_flag; int i; + int tag_bytes = journal_tag_bytes(journal); /* * First job: lock down the current transaction and wait for @@ -597,10 +606,10 @@ void jbd2_journal_commit_transaction(journal_t *journal) tag_flag |= JBD2_FLAG_SAME_UUID; tag = (journal_block_tag_t *) tagp; - tag->t_blocknr = cpu_to_be32(jh2bh(jh)->b_blocknr); + write_tag_block(tag_bytes, tag, jh2bh(jh)->b_blocknr); tag->t_flags = cpu_to_be32(tag_flag); - tagp += sizeof(journal_block_tag_t); - space_left -= sizeof(journal_block_tag_t); + tagp += tag_bytes; + space_left -= tag_bytes; if (first_tag) { memcpy (tagp, journal->j_uuid, 16); @@ -614,7 +623,7 @@ void jbd2_journal_commit_transaction(journal_t *journal) if (bufs == journal->j_wbufsize || commit_transaction->t_buffers == NULL || - space_left < sizeof(journal_block_tag_t) + 16) { + space_left < tag_bytes + 16) { jbd_debug(4, "JBD: Submit %d IOs\n", bufs); |