From bb95d9ab2a9d4afd03b59a603cccb2c601f68b78 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Tue, 3 Jan 2017 17:19:30 -0800 Subject: [PATCH] f2fs: drop exist_data for inline_data when truncated to 0 A test program gets the SEEK_DATA with two values between a new created file and the exist file on f2fs filesystem. F2FS filesystem, (the first "test1" is a new file) SEEK_DATA size != 0 (offset = 8192) SEEK_DATA size != 0 (offset = 4096) PNFS filesystem, (the first "test1" is a new file) SEEK_DATA size != 0 (offset = 4096) SEEK_DATA size != 0 (offset = 4096) int main(int argc, char **argv) { char *filename = argv[1]; int offset = 1, i = 0, fd = -1; if (argc < 2) { printf("Usage: %s f2fsfilename\n", argv[0]); return -1; } /* if (!access(filename, F_OK) || errno != ENOENT) { printf("Needs a new file for test, %m\n"); return -1; }*/ fd = open(filename, O_RDWR | O_CREAT, 0777); if (fd < 0) { printf("Create test file %s failed, %m\n", filename); return -1; } for (i = 0; i < 20; i++) { offset = 1 << i; ftruncate(fd, 0); lseek(fd, offset, SEEK_SET); write(fd, "test", 5); /* Get the alloc size by seek data equal zero*/ if (lseek(fd, 0, SEEK_DATA)) { printf("SEEK_DATA size != 0 (offset = %d)\n", offset); break; } } close(fd); return 0; } Reported-and-Tested-by: Kinglong Mee Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/file.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 291d2ca53a4c..6c335180b9d8 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -570,6 +570,8 @@ int truncate_blocks(struct inode *inode, u64 from, bool lock) if (f2fs_has_inline_data(inode)) { if (truncate_inline_inode(ipage, from)) set_page_dirty(ipage); + if (from == 0) + clear_inode_flag(inode, FI_DATA_EXIST); f2fs_put_page(ipage, 1); truncate_page = true; goto out; -- 2.30.2