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| author | Saugata Das <saugata.das@linaro.org> | 2012-05-17 02:21:30 +0000 |
|---|---|---|
| committer | Venkatraman S <svenkatr@ti.com> | 2012-06-11 12:31:08 +0530 |
| commit | 75eded2545e162cbfba612b195cdd0b7e67beabb (patch) | |
| tree | 476b4411cf1528b883338f9b671493ab331de16d | |
| parent | 19b1ff2eed883b939dfda64c8dc8977ee59b9aea (diff) | |
ext4: annotate all meta data requeststracking-emmc-llct-20120820.1tracking-emmc-llct-20120820.0tracking-emmc-llct-20120816.0tracking-emmc-llct-20120814.0tracking-emmc-llct-20120813.0tracking-emmc-llct-20120726.0tracking-emmc-llct-20120725.0tracking-emmc-llct-20120723.1tracking-emmc-llct-20120723.0tracking-emmc-llct-20120716.1tracking-emmc-llct-20120716.0tracking-emmc-llct-20120713.0tracking-emmc-llct-20120711.0tracking-emmc-llct-20120709.0tracking-emmc-llct-20120704.0tracking-emmc-llct-20120703.0tracking-emmc-llct-20120622.0tracking-emmc-llct-20120621.0tracking-emmc-llct-20120618.0tracking-emmc-llct-20120615.2tracking-emmc-llct-20120615.1tracking-emmc-llct-20120615.0tracking-emmc-llct-20120612.0
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 90f7c2e84db1..b09a308a4d15 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) { @@ -144,6 +146,8 @@ 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 02bc8cbe7281..a72a5a247802 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -4135,8 +4135,10 @@ 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"); |