From: Saranya Muruganandam <saranyamohan@xxxxxxxxxx>
Adding information on fields in e2fsck_struct
on how they are used when running parallel fsck.
Signed-off-by: Saranya Muruganandam <saranyamohan@xxxxxxxxxx>
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@xxxxxxxxx>
---
e2fsck/e2fsck.h | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/e2fsck/e2fsck.h b/e2fsck/e2fsck.h
index 33866316..1e82b048 100644
--- a/e2fsck/e2fsck.h
+++ b/e2fsck/e2fsck.h
@@ -285,7 +285,7 @@ struct e2fsck_thread {
struct e2fsck_struct {
/* Global context to get the cancel flag */
e2fsck_t global_ctx;
- ext2_filsys fs;
+ ext2_filsys fs; /* [fs_fix_rwlock] */
const char *program_name;
char *filesystem_name;
char *device_name;
@@ -294,7 +294,9 @@ struct e2fsck_struct {
char *log_fn;
FILE *problem_logf;
char *problem_log_fn;
- int flags; /* E2fsck internal flags */
+ /* E2fsck internal flags.
+ * shared by different threads for pass1 [fs_fix_rwlock] */
+ int flags;
int options;
unsigned blocksize; /* blocksize */
blk64_t use_superblock; /* sb requested by user */
@@ -314,6 +316,7 @@ struct e2fsck_struct {
int (*progress)(e2fsck_t ctx, int pass, unsigned long cur,
unsigned long max);
+ /* The following inode bitmaps are separately used in thread_ctx Pass1*/
ext2fs_inode_bitmap inode_used_map; /* Inodes which are in use */
ext2fs_inode_bitmap inode_bad_map; /* Inodes which are bad somehow */
ext2fs_inode_bitmap inode_dir_map; /* Inodes which are directories */
@@ -322,12 +325,14 @@ struct e2fsck_struct {
ext2fs_inode_bitmap inode_reg_map; /* Inodes which are regular files*/
ext2fs_inode_bitmap inode_casefold_map; /* Inodes which are casefolded */
+ /* Following 3 protected by [fs_block_map_rwlock] */
ext2fs_block_bitmap block_found_map; /* Blocks which are in use */
ext2fs_block_bitmap block_dup_map; /* Blks referenced more than once */
ext2fs_block_bitmap block_ea_map; /* Blocks which are used by EA's */
/*
- * Inode count arrays
+ * Inode count arrays.
+ * Separately used in thread_ctx, pass1
*/
ext2_icount_t inode_count;
ext2_icount_t inode_link_info;
@@ -349,7 +354,8 @@ struct e2fsck_struct {
/*
* Array of flags indicating whether an inode bitmap, block
- * bitmap, or inode table is invalid
+ * bitmap, or inode table is invalid.
+ * Separately used in thread_ctx, pass1
*/
int *invalid_inode_bitmap_flag;
int *invalid_block_bitmap_flag;
@@ -362,7 +368,8 @@ struct e2fsck_struct {
char *block_buf;
/*
- * For pass1_check_directory and pass1_get_blocks
+ * For pass1_check_directory and pass1_get_blocks.
+ * Separately used in thread_ctx in pass1
*/
ext2_ino_t stashed_ino;
struct ext2_inode *stashed_inode;
@@ -421,6 +428,7 @@ struct e2fsck_struct {
/*
* How we display the progress update (for unix)
+ * shared by different threads for pass1 [fs_fix_rwlock]
*/
int progress_fd;
int progress_pos;
@@ -429,7 +437,7 @@ struct e2fsck_struct {
int interactive; /* Are we connected directly to a tty? */
char start_meta[2], stop_meta[2];
- /* File counts */
+ /* File counts. Separately used in thread_ctx, pass1 */
__u32 fs_directory_count;
__u32 fs_regular_count;
__u32 fs_blockdev_count;
--
2.37.3
