diff options
| author | Stephen Warren <swarren@nvidia.com> | 2019-01-30 12:58:05 -0700 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2019-04-09 15:34:15 -0400 |
| commit | d5aee659f217746395ff58adf3a863627ff02ec1 (patch) | |
| tree | 2d2db84b18244673371c5478fbb365560cdb071a /fs/ext4/ext4_write.c | |
| parent | 4c24dab391003b99b1e0784fd41fe756cb07039e (diff) | |
| download | u-boot-d5aee659f217746395ff58adf3a863627ff02ec1.tar.gz | |
fs: ext4: cache extent data
When a file contains extents, U-Boot currently reads extent-related data
for each block in the file, even if that data is located in the same
block each time. This significantly slows down loading of files that use
extents. Implement a very dumb cache to prevent repeatedly reading the
same block. Files with extents now load as fast as files without.
Note: There are many cases where read_allocated_block() is called. This
patch only addresses one of those places; all others still read redundant
data in any case they did before. This is a minimal patch to fix the
load command; other cases aren't fixed.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'fs/ext4/ext4_write.c')
| -rw-r--r-- | fs/ext4/ext4_write.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/ext4/ext4_write.c b/fs/ext4/ext4_write.c index 4eb77c327e..95ffa3dfad 100644 --- a/fs/ext4/ext4_write.c +++ b/fs/ext4/ext4_write.c @@ -479,7 +479,7 @@ static int ext4fs_delete_file(int inodeno) /* release data blocks */ for (i = 0; i < no_blocks; i++) { - blknr = read_allocated_block(&inode, i); + blknr = read_allocated_block(&inode, i, NULL); if (blknr == 0) continue; if (blknr < 0) @@ -695,7 +695,7 @@ void ext4fs_deinit(void) ext4fs_read_inode(ext4fs_root, EXT2_JOURNAL_INO, &inode_journal); blknr = read_allocated_block(&inode_journal, - EXT2_JOURNAL_SUPERBLOCK); + EXT2_JOURNAL_SUPERBLOCK, NULL); ext4fs_devread((lbaint_t)blknr * fs->sect_perblk, 0, fs->blksz, temp_buff); jsb = (struct journal_superblock_t *)temp_buff; @@ -776,7 +776,7 @@ static int ext4fs_write_file(struct ext2_inode *file_inode, long int blknr; int blockend = fs->blksz; int skipfirst = 0; - blknr = read_allocated_block(file_inode, i); + blknr = read_allocated_block(file_inode, i, NULL); if (blknr <= 0) return -1; |