diff options
| author | Saugata Das <saugata.das@linaro.org> | 2012-05-17 02:21:30 +0000 |
|---|---|---|
| committer | Venkatraman S <svenkatr@ti.com> | 2012-08-21 13:57:27 +0530 |
| commit | e6ab4ea62ac9d5831e0357a7f064ecf5d671a2e6 (patch) | |
| tree | b8be01a1cdb1accb5524cdfb6463c4bf46fedd8d | |
| parent | a8dac16b0f0aaa07604b52712d611034dee40e1f (diff) | |
ext4: annotate all meta data requeststracking-emmc-llct-20130308.0tracking-emmc-llct-20130220.0tracking-emmc-llct-20130219.0tracking-emmc-llct-20130217.0tracking-emmc-llct-20130211.0tracking-emmc-llct-20130210.0tracking-emmc-llct-20130208.0tracking-emmc-llct-20130206.0tracking-emmc-llct-20130204.0tracking-emmc-llct-20130123.0tracking-emmc-llct-20130121.1tracking-emmc-llct-20130121.0tracking-emmc-llct-20130115.0tracking-emmc-llct-20130114.0tracking-emmc-llct-20121211.0tracking-emmc-llct-20121210.0tracking-emmc-llct-20121206.0tracking-emmc-llct-20121205.0tracking-emmc-llct-20121201.0tracking-emmc-llct-20121120.1tracking-emmc-llct-20121120.0tracking-emmc-llct-20121119.0tracking-emmc-llct-20121113.0tracking-emmc-llct-20121106.0tracking-emmc-llct-20121101.1tracking-emmc-llct-20121101.0tracking-emmc-llct-20121031.0tracking-emmc-llct-20121012.0tracking-emmc-llct-20121009.0tracking-emmc-llct-20121008.0tracking-emmc-llct-20121006.0tracking-emmc-llct-20121004.0tracking-emmc-llct-20120924.0tracking-emmc-llct-20120917.0tracking-emmc-llct-20120911.0tracking-emmc-llct-20120910.0tracking-emmc-llct-20120907.1tracking-emmc-llct-20120907.0tracking-emmc-llct-20120903.0tracking-emmc-llct-20120822.0tracking-emmc-llct-20120821.0tracking-emmc-linux-linaro-core-3.7-20130103.0tracking-emmc-linux-linaro-core-3.6-20121220.0tracking-emmc-linux-linaro-core-3.6-20121123.0tracking-emmc-linux-linaro-core-3.6-20121107.0
Today, storage devices like eMMC has special features like data tagging
(introduced in MMC-4.5 version) in order to improve performance of some
specific writes. On MMC stack, data tagging is used for all writes which has
REQ_META flag set. On EXT4, however, currently REQ_META is set only for read.
This patch adds the capability mark a meta-data buffer with set_buffer_meta
during meta data write. During submit_bh, this information is used to set
REQ_META flag.
Signed-off-by: Saugata Das <saugata.das@linaro.org>
| -rw-r--r-- | fs/ext4/ext4_jbd2.c | 4 | ||||
| -rw-r--r-- | fs/ext4/inode.c | 4 |
2 files changed, 7 insertions, 1 deletions
diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c index bfa65b49d424..5f1d318e8689 100644 --- a/fs/ext4/ext4_jbd2.c +++ b/fs/ext4/ext4_jbd2.c @@ -107,6 +107,8 @@ int __ext4_handle_dirty_metadata(const char *where, unsigned int line, { int err = 0; + set_buffer_meta(bh); + if (ext4_handle_valid(handle)) { err = jbd2_journal_dirty_metadata(handle, bh); if (err) { @@ -143,6 +145,8 @@ int __ext4_handle_dirty_super(const char *where, unsigned int line, struct buffer_head *bh = EXT4_SB(sb)->s_sbh; int err = 0; + set_buffer_meta(bh); + if (ext4_handle_valid(handle)) { ext4_superblock_csum_set(sb, (struct ext4_super_block *)bh->b_data); diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index dff171c3a123..05bb71f78012 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -4221,8 +4221,10 @@ int ext4_write_inode(struct inode *inode, struct writeback_control *wbc) err = __ext4_get_inode_loc(inode, &iloc, 0); if (err) return err; - if (wbc->sync_mode == WB_SYNC_ALL) + if (wbc->sync_mode == WB_SYNC_ALL) { + set_buffer_meta(iloc.bh); sync_dirty_buffer(iloc.bh); + } if (buffer_req(iloc.bh) && !buffer_uptodate(iloc.bh)) { EXT4_ERROR_INODE_BLOCK(inode, iloc.bh->b_blocknr, "IO error syncing inode"); |