We use f2fs_finalize_device to fsync previous data in checkpoint area before write last CP pack, in order to avoid cp corruption in sudden-power-off case. But this function will close the device, so this patch introduce a function to call fsync() only.
Signed-off-by: Yunlei He <[email protected]> --- fsck/mount.c | 2 +- include/f2fs_fs.h | 1 + lib/libf2fs_io.c | 10 ++++++++++ 3 files changed, 12 insertions(+), 1 deletion(-) diff --git a/fsck/mount.c b/fsck/mount.c index 7a8aeae..e234fe9 100644 --- a/fsck/mount.c +++ b/fsck/mount.c @@ -1939,7 +1939,7 @@ void write_checkpoint(struct f2fs_sb_info *sbi) write_nat_bits(sbi, sb, cp, sbi->cur_cp); /* in case of sudden power off */ - f2fs_finalize_device(); + f2fs_fsync_device(); /* write the last cp */ ret = dev_write_block(cp, cp_blk_no++); diff --git a/include/f2fs_fs.h b/include/f2fs_fs.h index bd609b9..3673817 100644 --- a/include/f2fs_fs.h +++ b/include/f2fs_fs.h @@ -1013,6 +1013,7 @@ extern int f2fs_dev_is_umounted(char *); extern int f2fs_get_device_info(void); extern int get_device_info(int); extern void f2fs_finalize_device(void); +extern void f2fs_fsync_device(void); extern int dev_read(void *, __u64, size_t); extern int dev_write(void *, __u64, size_t); diff --git a/lib/libf2fs_io.c b/lib/libf2fs_io.c index aa99068..50ff171 100644 --- a/lib/libf2fs_io.c +++ b/lib/libf2fs_io.c @@ -193,6 +193,16 @@ int dev_reada_block(__u64 blk_addr) return dev_readahead(blk_addr << F2FS_BLKSIZE_BITS, F2FS_BLKSIZE); } +void f2fs_fsync_device(void) +{ + int i; + + for (i = 0; i < c.ndevs; i++) { + if (fsync(c.devices[i].fd) < 0) + MSG(0, "\tError: Could not conduct fsync!!!\n"); + } +} + void f2fs_finalize_device(void) { int i; -- 2.7.4 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
