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!40 优化syscall 调用，提升fsck 读写性能

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Merge pull request !40 from fangzhou/syscall_opt
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openharmony_ci 2024-03-28 06:41:37 +00:00 committed by Gitee
commit 39c8bb9f31
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GPG Key ID: 173E9B9CA92EEF8F
1 changed files with 7 additions and 20 deletions
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27
lib/libf2fs_io.c
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@ -282,11 +282,8 @@ static long dcache_find(off64_t blk)
/* Physical read into cache */ /* Physical read into cache */
static int dcache_io_read(int fd, long entry, off64_t offset, off64_t blk) static int dcache_io_read(int fd, long entry, off64_t offset, off64_t blk)
{ {
if (lseek64(fd, offset, SEEK_SET) < 0) { if (pread64(fd, dcache_buf + entry * F2FS_BLKSIZE,
MSG(0, "\n lseek64 fail.\n"); F2FS_BLKSIZE, offset) < 0) {
return -1;
}
if (read(fd, dcache_buf + entry * F2FS_BLKSIZE, F2FS_BLKSIZE) < 0) {
MSG(0, "\n read() fail.\n"); MSG(0, "\n read() fail.\n");
return -1; return -1;
} }
@ -397,9 +394,7 @@ int dev_read_version(void *buf, __u64 offset, size_t len)
{ {
if (c.sparse_mode) if (c.sparse_mode)
return 0; return 0;
if (lseek64(c.kd, (off64_t)offset, SEEK_SET) < 0) if (pread64(c.kd, buf, len, offset) < 0)
return -1;
if (read(c.kd, buf, len) < 0)
return -1; return -1;
return 0; return 0;
} }
@ -542,9 +537,7 @@ int dev_read(void *buf, __u64 offset, size_t len)
err = dcache_read(fd, buf, (off64_t)offset, len); err = dcache_read(fd, buf, (off64_t)offset, len);
if (err <= 0) if (err <= 0)
return err; return err;
if (lseek64(fd, (off64_t)offset, SEEK_SET) < 0) if (pread64(fd, buf, len, offset) < 0)
return -1;
if (read(fd, buf, len) < 0)
return -1; return -1;
return 0; return 0;
} }
@ -590,9 +583,7 @@ int dev_write(void *buf, __u64 offset, size_t len)
*/ */
if (dcache_update_cache(fd, buf, (off64_t)offset, len) < 0) if (dcache_update_cache(fd, buf, (off64_t)offset, len) < 0)
return -1; return -1;
if (lseek64(fd, (off64_t)offset, SEEK_SET) < 0) if (pwrite64(fd, buf, len, offset) < 0)
return -1;
if (write(fd, buf, len) < 0)
return -1; return -1;
return 0; return 0;
} }
@ -604,9 +595,7 @@ int dev_write_block(void *buf, __u64 blk_addr)
int dev_write_dump(void *buf, __u64 offset, size_t len) int dev_write_dump(void *buf, __u64 offset, size_t len)
{ {
if (lseek64(c.dump_fd, (off64_t)offset, SEEK_SET) < 0) if (pwrite64(c.dump_fd, buf, len, offset) < 0)
return -1;
if (write(c.dump_fd, buf, len) < 0)
return -1; return -1;
return 0; return 0;
} }
@ -629,9 +618,7 @@ int dev_fill(void *buf, __u64 offset, size_t len)
/* Only allow fill to zero */ /* Only allow fill to zero */
if (*((__u8*)buf)) if (*((__u8*)buf))
return -1; return -1;
if (lseek64(fd, (off64_t)offset, SEEK_SET) < 0) if (pwrite64(fd, buf, len, offset) < 0)
return -1;
if (write(fd, buf, len) < 0)
return -1; return -1;
return 0; return 0;
} }