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Diffstat (limited to 'fs/reiserfs/super.c')
-rw-r--r--fs/reiserfs/super.c552
1 files changed, 327 insertions, 225 deletions
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 9fb20426005e..a392cef6acc6 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -74,7 +74,7 @@ static int reiserfs_sync_fs(struct super_block *s, int wait)
dquot_writeback_dquots(s, -1);
reiserfs_write_lock(s);
if (!journal_begin(&th, s, 1))
- if (!journal_end_sync(&th, s, 1))
+ if (!journal_end_sync(&th))
reiserfs_flush_old_commits(s);
reiserfs_write_unlock(s);
return 0;
@@ -136,9 +136,9 @@ static int reiserfs_freeze(struct super_block *s)
} else {
reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s),
1);
- journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s));
+ journal_mark_dirty(&th, SB_BUFFER_WITH_SB(s));
reiserfs_block_writes(&th);
- journal_end_sync(&th, s, 1);
+ journal_end_sync(&th);
}
}
reiserfs_write_unlock(s);
@@ -153,13 +153,15 @@ static int reiserfs_unfreeze(struct super_block *s)
extern const struct in_core_key MAX_IN_CORE_KEY;
-/* this is used to delete "save link" when there are no items of a
- file it points to. It can either happen if unlink is completed but
- "save unlink" removal, or if file has both unlink and truncate
- pending and as unlink completes first (because key of "save link"
- protecting unlink is bigger that a key lf "save link" which
- protects truncate), so there left no items to make truncate
- completion on */
+/*
+ * this is used to delete "save link" when there are no items of a
+ * file it points to. It can either happen if unlink is completed but
+ * "save unlink" removal, or if file has both unlink and truncate
+ * pending and as unlink completes first (because key of "save link"
+ * protecting unlink is bigger that a key lf "save link" which
+ * protects truncate), so there left no items to make truncate
+ * completion on
+ */
static int remove_save_link_only(struct super_block *s,
struct reiserfs_key *key, int oid_free)
{
@@ -176,7 +178,7 @@ static int remove_save_link_only(struct super_block *s,
/* removals are protected by direct items */
reiserfs_release_objectid(&th, le32_to_cpu(key->k_objectid));
- return journal_end(&th, s, JOURNAL_PER_BALANCE_CNT);
+ return journal_end(&th);
}
#ifdef CONFIG_QUOTA
@@ -258,7 +260,7 @@ static int finish_unfinished(struct super_block *s)
break;
}
item_pos--;
- ih = B_N_PITEM_HEAD(bh, item_pos);
+ ih = item_head(bh, item_pos);
if (le32_to_cpu(ih->ih_key.k_dir_id) != MAX_KEY_OBJECTID)
/* there are no "save" links anymore */
@@ -271,7 +273,7 @@ static int finish_unfinished(struct super_block *s)
truncate = 0;
/* reiserfs_iget needs k_dirid and k_objectid only */
- item = B_I_PITEM(bh, ih);
+ item = ih_item_body(bh, ih);
obj_key.on_disk_key.k_dir_id = le32_to_cpu(*(__le32 *) item);
obj_key.on_disk_key.k_objectid =
le32_to_cpu(ih->ih_key.k_objectid);
@@ -282,8 +284,10 @@ static int finish_unfinished(struct super_block *s)
inode = reiserfs_iget(s, &obj_key);
if (!inode) {
- /* the unlink almost completed, it just did not manage to remove
- "save" link and release objectid */
+ /*
+ * the unlink almost completed, it just did not
+ * manage to remove "save" link and release objectid
+ */
reiserfs_warning(s, "vs-2180", "iget failed for %K",
&obj_key);
retval = remove_save_link_only(s, &save_link_key, 1);
@@ -303,10 +307,13 @@ static int finish_unfinished(struct super_block *s)
reiserfs_write_lock_nested(inode->i_sb, depth);
if (truncate && S_ISDIR(inode->i_mode)) {
- /* We got a truncate request for a dir which is impossible.
- The only imaginable way is to execute unfinished truncate request
- then boot into old kernel, remove the file and create dir with
- the same key. */
+ /*
+ * We got a truncate request for a dir which
+ * is impossible. The only imaginable way is to
+ * execute unfinished truncate request then boot
+ * into old kernel, remove the file and create dir
+ * with the same key.
+ */
reiserfs_warning(s, "green-2101",
"impossible truncate on a "
"directory %k. Please report",
@@ -320,14 +327,16 @@ static int finish_unfinished(struct super_block *s)
if (truncate) {
REISERFS_I(inode)->i_flags |=
i_link_saved_truncate_mask;
- /* not completed truncate found. New size was committed together
- with "save" link */
+ /*
+ * not completed truncate found. New size was
+ * committed together with "save" link
+ */
reiserfs_info(s, "Truncating %k to %Ld ..",
INODE_PKEY(inode), inode->i_size);
- reiserfs_truncate_file(inode,
- 0
- /*don't update modification time */
- );
+
+ /* don't update modification time */
+ reiserfs_truncate_file(inode, 0);
+
retval = remove_save_link(inode, truncate);
} else {
REISERFS_I(inode)->i_flags |= i_link_saved_unlink_mask;
@@ -373,10 +382,12 @@ static int finish_unfinished(struct super_block *s)
return retval;
}
-/* to protect file being unlinked from getting lost we "safe" link files
- being unlinked. This link will be deleted in the same transaction with last
- item of file. mounting the filesystem we scan all these links and remove
- files which almost got lost */
+/*
+ * to protect file being unlinked from getting lost we "safe" link files
+ * being unlinked. This link will be deleted in the same transaction with last
+ * item of file. mounting the filesystem we scan all these links and remove
+ * files which almost got lost
+ */
void add_save_link(struct reiserfs_transaction_handle *th,
struct inode *inode, int truncate)
{
@@ -495,7 +506,7 @@ int remove_save_link(struct inode *inode, int truncate)
} else
REISERFS_I(inode)->i_flags &= ~i_link_saved_truncate_mask;
- return journal_end(&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT);
+ return journal_end(&th);
}
static void reiserfs_kill_sb(struct super_block *s)
@@ -530,19 +541,23 @@ static void reiserfs_put_super(struct super_block *s)
reiserfs_write_lock(s);
- /* change file system state to current state if it was mounted with read-write permissions */
+ /*
+ * change file system state to current state if it was mounted
+ * with read-write permissions
+ */
if (!(s->s_flags & MS_RDONLY)) {
if (!journal_begin(&th, s, 10)) {
reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s),
1);
set_sb_umount_state(SB_DISK_SUPER_BLOCK(s),
REISERFS_SB(s)->s_mount_state);
- journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s));
+ journal_mark_dirty(&th, SB_BUFFER_WITH_SB(s));
}
}
- /* note, journal_release checks for readonly mount, and can decide not
- ** to do a journal_end
+ /*
+ * note, journal_release checks for readonly mount, and can
+ * decide not to do a journal_end
*/
journal_release(&th, s);
@@ -559,6 +574,7 @@ static void reiserfs_put_super(struct super_block *s)
reiserfs_write_unlock(s);
mutex_destroy(&REISERFS_SB(s)->lock);
+ destroy_workqueue(REISERFS_SB(s)->commit_wq);
kfree(s->s_fs_info);
s->s_fs_info = NULL;
}
@@ -634,15 +650,16 @@ static void reiserfs_dirty_inode(struct inode *inode, int flags)
}
reiserfs_write_lock(inode->i_sb);
- /* this is really only used for atime updates, so they don't have
- ** to be included in O_SYNC or fsync
+ /*
+ * this is really only used for atime updates, so they don't have
+ * to be included in O_SYNC or fsync
*/
err = journal_begin(&th, inode->i_sb, 1);
if (err)
goto out;
reiserfs_update_sd(&th, inode);
- journal_end(&th, inode->i_sb, 1);
+ journal_end(&th);
out:
reiserfs_write_unlock(inode->i_sb);
@@ -788,31 +805,53 @@ static const struct export_operations reiserfs_export_ops = {
.get_parent = reiserfs_get_parent,
};
-/* this struct is used in reiserfs_getopt () for containing the value for those
- mount options that have values rather than being toggles. */
+/*
+ * this struct is used in reiserfs_getopt () for containing the value for
+ * those mount options that have values rather than being toggles.
+ */
typedef struct {
char *value;
- int setmask; /* bitmask which is to set on mount_options bitmask when this
- value is found, 0 is no bits are to be changed. */
- int clrmask; /* bitmask which is to clear on mount_options bitmask when this
- value is found, 0 is no bits are to be changed. This is
- applied BEFORE setmask */
+ /*
+ * bitmask which is to set on mount_options bitmask
+ * when this value is found, 0 is no bits are to be changed.
+ */
+ int setmask;
+ /*
+ * bitmask which is to clear on mount_options bitmask
+ * when this value is found, 0 is no bits are to be changed.
+ * This is applied BEFORE setmask
+ */
+ int clrmask;
} arg_desc_t;
/* Set this bit in arg_required to allow empty arguments */
#define REISERFS_OPT_ALLOWEMPTY 31
-/* this struct is used in reiserfs_getopt() for describing the set of reiserfs
- mount options */
+/*
+ * this struct is used in reiserfs_getopt() for describing the
+ * set of reiserfs mount options
+ */
typedef struct {
char *option_name;
- int arg_required; /* 0 if argument is not required, not 0 otherwise */
- const arg_desc_t *values; /* list of values accepted by an option */
- int setmask; /* bitmask which is to set on mount_options bitmask when this
- value is found, 0 is no bits are to be changed. */
- int clrmask; /* bitmask which is to clear on mount_options bitmask when this
- value is found, 0 is no bits are to be changed. This is
- applied BEFORE setmask */
+
+ /* 0 if argument is not required, not 0 otherwise */
+ int arg_required;
+
+ /* list of values accepted by an option */
+ const arg_desc_t *values;
+
+ /*
+ * bitmask which is to set on mount_options bitmask
+ * when this value is found, 0 is no bits are to be changed.
+ */
+ int setmask;
+
+ /*
+ * bitmask which is to clear on mount_options bitmask
+ * when this value is found, 0 is no bits are to be changed.
+ * This is applied BEFORE setmask
+ */
+ int clrmask;
} opt_desc_t;
/* possible values for -o data= */
@@ -833,8 +872,10 @@ static const arg_desc_t barrier_mode[] = {
{.value = NULL}
};
-/* possible values for "-o block-allocator=" and bits which are to be set in
- s_mount_opt of reiserfs specific part of in-core super block */
+/*
+ * possible values for "-o block-allocator=" and bits which are to be set in
+ * s_mount_opt of reiserfs specific part of in-core super block
+ */
static const arg_desc_t balloc[] = {
{"noborder", 1 << REISERFS_NO_BORDER, 0},
{"border", 0, 1 << REISERFS_NO_BORDER},
@@ -864,21 +905,25 @@ static const arg_desc_t error_actions[] = {
{NULL, 0, 0},
};
-/* proceed only one option from a list *cur - string containing of mount options
- opts - array of options which are accepted
- opt_arg - if option is found and requires an argument and if it is specifed
- in the input - pointer to the argument is stored here
- bit_flags - if option requires to set a certain bit - it is set here
- return -1 if unknown option is found, opt->arg_required otherwise */
+/*
+ * proceed only one option from a list *cur - string containing of mount
+ * options
+ * opts - array of options which are accepted
+ * opt_arg - if option is found and requires an argument and if it is specifed
+ * in the input - pointer to the argument is stored here
+ * bit_flags - if option requires to set a certain bit - it is set here
+ * return -1 if unknown option is found, opt->arg_required otherwise
+ */
static int reiserfs_getopt(struct super_block *s, char **cur, opt_desc_t * opts,
char **opt_arg, unsigned long *bit_flags)
{
char *p;
- /* foo=bar,
- ^ ^ ^
- | | +-- option_end
- | +-- arg_start
- +-- option_start
+ /*
+ * foo=bar,
+ * ^ ^ ^
+ * | | +-- option_end
+ * | +-- arg_start
+ * +-- option_start
*/
const opt_desc_t *opt;
const arg_desc_t *arg;
@@ -893,9 +938,12 @@ static int reiserfs_getopt(struct super_block *s, char **cur, opt_desc_t * opts,
}
if (!strncmp(p, "alloc=", 6)) {
- /* Ugly special case, probably we should redo options parser so that
- it can understand several arguments for some options, also so that
- it can fill several bitfields with option values. */
+ /*
+ * Ugly special case, probably we should redo options
+ * parser so that it can understand several arguments for
+ * some options, also so that it can fill several bitfields
+ * with option values.
+ */
if (reiserfs_parse_alloc_options(s, p + 6)) {
return -1;
} else {
@@ -958,7 +1006,10 @@ static int reiserfs_getopt(struct super_block *s, char **cur, opt_desc_t * opts,
return -1;
}
- /* move to the argument, or to next option if argument is not required */
+ /*
+ * move to the argument, or to next option if argument is not
+ * required
+ */
p++;
if (opt->arg_required
@@ -995,12 +1046,20 @@ static int reiserfs_getopt(struct super_block *s, char **cur, opt_desc_t * opts,
}
/* returns 0 if something is wrong in option string, 1 - otherwise */
-static int reiserfs_parse_options(struct super_block *s, char *options, /* string given via mount's -o */
+static int reiserfs_parse_options(struct super_block *s,
+
+ /* string given via mount's -o */
+ char *options,
+
+ /*
+ * after the parsing phase, contains the
+ * collection of bitflags defining what
+ * mount options were selected.
+ */
unsigned long *mount_options,
- /* after the parsing phase, contains the
- collection of bitflags defining what
- mount options were selected. */
- unsigned long *blocks, /* strtol-ed from NNN of resize=NNN */
+
+ /* strtol-ed from NNN of resize=NNN */
+ unsigned long *blocks,
char **jdev_name,
unsigned int *commit_max_age,
char **qf_names,
@@ -1010,7 +1069,10 @@ static int reiserfs_parse_options(struct super_block *s, char *options, /* strin
char *arg = NULL;
char *pos;
opt_desc_t opts[] = {
- /* Compatibility stuff, so that -o notail for old setups still work */
+ /*
+ * Compatibility stuff, so that -o notail for old
+ * setups still work
+ */
{"tails",.arg_required = 't',.values = tails},
{"notail",.clrmask =
(1 << REISERFS_LARGETAIL) | (1 << REISERFS_SMALLTAIL)},
@@ -1055,8 +1117,10 @@ static int reiserfs_parse_options(struct super_block *s, char *options, /* strin
*blocks = 0;
if (!options || !*options)
- /* use default configuration: create tails, journaling on, no
- conversion to newest format */
+ /*
+ * use default configuration: create tails, journaling on, no
+ * conversion to newest format
+ */
return 1;
for (pos = options; pos;) {
@@ -1109,7 +1173,8 @@ static int reiserfs_parse_options(struct super_block *s, char *options, /* strin
if (c == 'j') {
if (arg && *arg && jdev_name) {
- if (*jdev_name) { //Hm, already assigned?
+ /* Hm, already assigned? */
+ if (*jdev_name) {
reiserfs_warning(s, "super-6510",
"journal device was "
"already specified to "
@@ -1362,8 +1427,10 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
safe_mask |= 1 << REISERFS_USRQUOTA;
safe_mask |= 1 << REISERFS_GRPQUOTA;
- /* Update the bitmask, taking care to keep
- * the bits we're not allowed to change here */
+ /*
+ * Update the bitmask, taking care to keep
+ * the bits we're not allowed to change here
+ */
REISERFS_SB(s)->s_mount_opt =
(REISERFS_SB(s)->
s_mount_opt & ~safe_mask) | (mount_options & safe_mask);
@@ -1410,7 +1477,7 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
/* Mounting a rw partition read-only. */
reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1);
set_sb_umount_state(rs, REISERFS_SB(s)->s_mount_state);
- journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s));
+ journal_mark_dirty(&th, SB_BUFFER_WITH_SB(s));
} else {
/* remount read-write */
if (!(s->s_flags & MS_RDONLY)) {
@@ -1427,7 +1494,9 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
handle_data_mode(s, mount_options);
handle_barrier_mode(s, mount_options);
REISERFS_SB(s)->s_mount_state = sb_umount_state(rs);
- s->s_flags &= ~MS_RDONLY; /* now it is safe to call journal_begin */
+
+ /* now it is safe to call journal_begin */
+ s->s_flags &= ~MS_RDONLY;
err = journal_begin(&th, s, 10);
if (err)
goto out_err_unlock;
@@ -1440,12 +1509,12 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
if (!old_format_only(s))
set_sb_mnt_count(rs, sb_mnt_count(rs) + 1);
/* mark_buffer_dirty (SB_BUFFER_WITH_SB (s), 1); */
- journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s));
+ journal_mark_dirty(&th, SB_BUFFER_WITH_SB(s));
REISERFS_SB(s)->s_mount_state = REISERFS_VALID_FS;
}
/* this will force a full flush of all journal lists */
SB_JOURNAL(s)->j_must_wait = 1;
- err = journal_end(&th, s, 10);
+ err = journal_end(&th);
if (err)
goto out_err_unlock;
@@ -1489,9 +1558,9 @@ static int read_super_block(struct super_block *s, int offset)
brelse(bh);
return 1;
}
- //
- // ok, reiserfs signature (old or new) found in at the given offset
- //
+ /*
+ * ok, reiserfs signature (old or new) found in at the given offset
+ */
fs_blocksize = sb_blocksize(rs);
brelse(bh);
sb_set_blocksize(s, fs_blocksize);
@@ -1529,9 +1598,11 @@ static int read_super_block(struct super_block *s, int offset)
SB_BUFFER_WITH_SB(s) = bh;
SB_DISK_SUPER_BLOCK(s) = rs;
+ /*
+ * magic is of non-standard journal filesystem, look at s_version to
+ * find which format is in use
+ */
if (is_reiserfs_jr(rs)) {
- /* magic is of non-standard journal filesystem, look at s_version to
- find which format is in use */
if (sb_version(rs) == REISERFS_VERSION_2)
reiserfs_info(s, "found reiserfs format \"3.6\""
" with non-standard journal\n");
@@ -1545,8 +1616,10 @@ static int read_super_block(struct super_block *s, int offset)
return 1;
}
} else
- /* s_version of standard format may contain incorrect information,
- so we just look at the magic string */
+ /*
+ * s_version of standard format may contain incorrect
+ * information, so we just look at the magic string
+ */
reiserfs_info(s,
"found reiserfs format \"%s\" with standard journal\n",
is_reiserfs_3_5(rs) ? "3.5" : "3.6");
@@ -1558,8 +1631,9 @@ static int read_super_block(struct super_block *s, int offset)
s->dq_op = &reiserfs_quota_operations;
#endif
- /* new format is limited by the 32 bit wide i_blocks field, want to
- ** be one full block below that.
+ /*
+ * new format is limited by the 32 bit wide i_blocks field, want to
+ * be one full block below that.
*/
s->s_maxbytes = (512LL << 32) - s->s_blocksize;
return 0;
@@ -1568,7 +1642,7 @@ static int read_super_block(struct super_block *s, int offset)
/* after journal replay, reread all bitmap and super blocks */
static int reread_meta_blocks(struct super_block *s)
{
- ll_rw_block(READ, 1, &(SB_BUFFER_WITH_SB(s)));
+ ll_rw_block(READ, 1, &SB_BUFFER_WITH_SB(s));
wait_on_buffer(SB_BUFFER_WITH_SB(s));
if (!buffer_uptodate(SB_BUFFER_WITH_SB(s))) {
reiserfs_warning(s, "reiserfs-2504", "error reading the super");
@@ -1578,14 +1652,15 @@ static int reread_meta_blocks(struct super_block *s)
return 0;
}
-/////////////////////////////////////////////////////
-// hash detection stuff
+/* hash detection stuff */
-// if root directory is empty - we set default - Yura's - hash and
-// warn about it
-// FIXME: we look for only one name in a directory. If tea and yura
-// bith have the same value - we ask user to send report to the
-// mailing list
+/*
+ * if root directory is empty - we set default - Yura's - hash and
+ * warn about it
+ * FIXME: we look for only one name in a directory. If tea and yura
+ * both have the same value - we ask user to send report to the
+ * mailing list
+ */
static __u32 find_hash_out(struct super_block *s)
{
int retval;
@@ -1593,92 +1668,83 @@ static __u32 find_hash_out(struct super_block *s)
struct cpu_key key;
INITIALIZE_PATH(path);
struct reiserfs_dir_entry de;
+ struct reiserfs_de_head *deh;
__u32 hash = DEFAULT_HASH;
+ __u32 deh_hashval, teahash, r5hash, yurahash;
inode = s->s_root->d_inode;
- do { // Some serious "goto"-hater was there ;)
- u32 teahash, r5hash, yurahash;
+ make_cpu_key(&key, inode, ~0, TYPE_DIRENTRY, 3);
+ retval = search_by_entry_key(s, &key, &path, &de);
+ if (retval == IO_ERROR) {
+ pathrelse(&path);
+ return UNSET_HASH;
+ }
+ if (retval == NAME_NOT_FOUND)
+ de.de_entry_num--;
+
+ set_de_name_and_namelen(&de);
+ deh = de.de_deh + de.de_entry_num;
- make_cpu_key(&key, inode, ~0, TYPE_DIRENTRY, 3);
- retval = search_by_entry_key(s, &key, &path, &de);
- if (retval == IO_ERROR) {
- pathrelse(&path);
- return UNSET_HASH;
- }
- if (retval == NAME_NOT_FOUND)
- de.de_entry_num--;
- set_de_name_and_namelen(&de);
- if (deh_offset(&(de.de_deh[de.de_entry_num])) == DOT_DOT_OFFSET) {
- /* allow override in this case */
- if (reiserfs_rupasov_hash(s)) {
- hash = YURA_HASH;
- }
- reiserfs_info(s, "FS seems to be empty, autodetect "
- "is using the default hash\n");
- break;
- }
- r5hash = GET_HASH_VALUE(r5_hash(de.de_name, de.de_namelen));
- teahash = GET_HASH_VALUE(keyed_hash(de.de_name, de.de_namelen));
- yurahash = GET_HASH_VALUE(yura_hash(de.de_name, de.de_namelen));
- if (((teahash == r5hash)
- &&
- (GET_HASH_VALUE(deh_offset(&(de.de_deh[de.de_entry_num])))
- == r5hash)) || ((teahash == yurahash)
- && (yurahash ==
- GET_HASH_VALUE(deh_offset
- (&
- (de.
- de_deh[de.
- de_entry_num])))))
- || ((r5hash == yurahash)
- && (yurahash ==
- GET_HASH_VALUE(deh_offset
- (&(de.de_deh[de.de_entry_num])))))) {
- reiserfs_warning(s, "reiserfs-2506", "Unable to "
- "automatically detect hash function. "
- "Please mount with -o "
- "hash={tea,rupasov,r5}");
- hash = UNSET_HASH;
- break;
- }
- if (GET_HASH_VALUE(deh_offset(&(de.de_deh[de.de_entry_num]))) ==
- yurahash)
+ if (deh_offset(deh) == DOT_DOT_OFFSET) {
+ /* allow override in this case */
+ if (reiserfs_rupasov_hash(s))
hash = YURA_HASH;
- else if (GET_HASH_VALUE
- (deh_offset(&(de.de_deh[de.de_entry_num]))) == teahash)
- hash = TEA_HASH;
- else if (GET_HASH_VALUE
- (deh_offset(&(de.de_deh[de.de_entry_num]))) == r5hash)
- hash = R5_HASH;
- else {
- reiserfs_warning(s, "reiserfs-2506",
- "Unrecognised hash function");
- hash = UNSET_HASH;
- }
- } while (0);
+ reiserfs_info(s, "FS seems to be empty, autodetect is using the default hash\n");
+ goto out;
+ }
+
+ deh_hashval = GET_HASH_VALUE(deh_offset(deh));
+ r5hash = GET_HASH_VALUE(r5_hash(de.de_name, de.de_namelen));
+ teahash = GET_HASH_VALUE(keyed_hash(de.de_name, de.de_namelen));
+ yurahash = GET_HASH_VALUE(yura_hash(de.de_name, de.de_namelen));
+
+ if ((teahash == r5hash && deh_hashval == r5hash) ||
+ (teahash == yurahash && deh_hashval == yurahash) ||
+ (r5hash == yurahash && deh_hashval == yurahash)) {
+ reiserfs_warning(s, "reiserfs-2506",
+ "Unable to automatically detect hash "
+ "function. Please mount with -o "
+ "hash={tea,rupasov,r5}");
+ hash = UNSET_HASH;
+ goto out;
+ }
+ if (deh_hashval == yurahash)
+ hash = YURA_HASH;
+ else if (deh_hashval == teahash)
+ hash = TEA_HASH;
+ else if (deh_hashval == r5hash)
+ hash = R5_HASH;
+ else {
+ reiserfs_warning(s, "reiserfs-2506",
+ "Unrecognised hash function");
+ hash = UNSET_HASH;
+ }
+out:
pathrelse(&path);
return hash;
}
-// finds out which hash names are sorted with
+/* finds out which hash names are sorted with */
static int what_hash(struct super_block *s)
{
__u32 code;
code = sb_hash_function_code(SB_DISK_SUPER_BLOCK(s));
- /* reiserfs_hash_detect() == true if any of the hash mount options
- ** were used. We must check them to make sure the user isn't
- ** using a bad hash value
+ /*
+ * reiserfs_hash_detect() == true if any of the hash mount options
+ * were used. We must check them to make sure the user isn't
+ * using a bad hash value
*/
if (code == UNSET_HASH || reiserfs_hash_detect(s))
code = find_hash_out(s);
if (code != UNSET_HASH && reiserfs_hash_detect(s)) {
- /* detection has found the hash, and we must check against the
- ** mount options
+ /*
+ * detection has found the hash, and we must check against the
+ * mount options
*/
if (reiserfs_rupasov_hash(s) && code != YURA_HASH) {
reiserfs_warning(s, "reiserfs-2507",
@@ -1700,7 +1766,10 @@ static int what_hash(struct super_block *s)
code = UNSET_HASH;
}
} else {
- /* find_hash_out was not called or could not determine the hash */
+ /*
+ * find_hash_out was not called or
+ * could not determine the hash
+ */
if (reiserfs_rupasov_hash(s)) {
code = YURA_HASH;
} else if (reiserfs_tea_hash(s)) {
@@ -1710,8 +1779,9 @@ static int what_hash(struct super_block *s)
}
}
- /* if we are mounted RW, and we have a new valid hash code, update
- ** the super
+ /*
+ * if we are mounted RW, and we have a new valid hash code, update
+ * the super
*/
if (code != UNSET_HASH &&
!(s->s_flags & MS_RDONLY) &&
@@ -1721,7 +1791,7 @@ static int what_hash(struct super_block *s)
return code;
}
-// return pointer to appropriate function
+/* return pointer to appropriate function */
static hashf_t hash_function(struct super_block *s)
{
switch (what_hash(s)) {
@@ -1738,7 +1808,7 @@ static hashf_t hash_function(struct super_block *s)
return NULL;
}
-// this is used to set up correct value for old partitions
+/* this is used to set up correct value for old partitions */
static int function2code(hashf_t func)
{
if (func == keyed_hash)
@@ -1748,7 +1818,7 @@ static int function2code(hashf_t func)
if (func == r5_hash)
return R5_HASH;
- BUG(); // should never happen
+ BUG(); /* should never happen */
return 0;
}
@@ -1783,8 +1853,7 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
sbi->s_mount_opt |= (1 << REISERFS_SMALLTAIL);
sbi->s_mount_opt |= (1 << REISERFS_ERROR_RO);
sbi->s_mount_opt |= (1 << REISERFS_BARRIER_FLUSH);
- /* no preallocation minimum, be smart in
- reiserfs_file_write instead */
+ /* no preallocation minimum, be smart in reiserfs_file_write instead */
sbi->s_alloc_options.preallocmin = 0;
/* Preallocate by 16 blocks (17-1) at once */
sbi->s_alloc_options.preallocsize = 17;
@@ -1796,9 +1865,17 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
mutex_init(&sbi->lock);
sbi->lock_depth = -1;
+ sbi->commit_wq = alloc_workqueue("reiserfs/%s", WQ_MEM_RECLAIM, 0,
+ s->s_id);
+ if (!sbi->commit_wq) {
+ SWARN(silent, s, "", "Cannot allocate commit workqueue");
+ errval = -ENOMEM;
+ goto error_unlocked;
+ }
+
jdev_name = NULL;
if (reiserfs_parse_options
- (s, (char *)data, &(sbi->s_mount_opt), &blocks, &jdev_name,
+ (s, (char *)data, &sbi->s_mount_opt, &blocks, &jdev_name,
&commit_max_age, qf_names, &qfmt) == 0) {
goto error_unlocked;
}
@@ -1819,10 +1896,17 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
goto error_unlocked;
}
- /* try old format (undistributed bitmap, super block in 8-th 1k block of a device) */
+ /*
+ * try old format (undistributed bitmap, super block in 8-th 1k
+ * block of a device)
+ */
if (!read_super_block(s, REISERFS_OLD_DISK_OFFSET_IN_BYTES))
old_format = 1;
- /* try new format (64-th 1k block), which can contain reiserfs super block */
+
+ /*
+ * try new format (64-th 1k block), which can contain reiserfs
+ * super block
+ */
else if (read_super_block(s, REISERFS_DISK_OFFSET_IN_BYTES)) {
SWARN(silent, s, "sh-2021", "can not find reiserfs on %s",
s->s_id);
@@ -1830,9 +1914,11 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
}
rs = SB_DISK_SUPER_BLOCK(s);
- /* Let's do basic sanity check to verify that underlying device is not
- smaller than the filesystem. If the check fails then abort and scream,
- because bad stuff will happen otherwise. */
+ /*
+ * Let's do basic sanity check to verify that underlying device is not
+ * smaller than the filesystem. If the check fails then abort and
+ * scream, because bad stuff will happen otherwise.
+ */
if (s->s_bdev && s->s_bdev->bd_inode
&& i_size_read(s->s_bdev->bd_inode) <
sb_block_count(rs) * sb_blocksize(rs)) {
@@ -1876,15 +1962,16 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
printk("reiserfs: using flush barriers\n");
}
- // set_device_ro(s->s_dev, 1) ;
if (journal_init(s, jdev_name, old_format, commit_max_age)) {
SWARN(silent, s, "sh-2022",
"unable to initialize journal space");
goto error_unlocked;
} else {
- jinit_done = 1; /* once this is set, journal_release must be called
- ** if we error out of the mount
- */
+ /*
+ * once this is set, journal_release must be called
+ * if we error out of the mount
+ */
+ jinit_done = 1;
}
if (reread_meta_blocks(s)) {
@@ -1905,7 +1992,7 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
args.dirid = REISERFS_ROOT_PARENT_OBJECTID;
root_inode =
iget5_locked(s, REISERFS_ROOT_OBJECTID, reiserfs_find_actor,
- reiserfs_init_locked_inode, (void *)(&args));
+ reiserfs_init_locked_inode, (void *)&args);
if (!root_inode) {
SWARN(silent, s, "jmacd-10", "get root inode failed");
goto error_unlocked;
@@ -1929,7 +2016,7 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
s->s_root = d_make_root(root_inode);
if (!s->s_root)
goto error;
- // define and initialize hash function
+ /* define and initialize hash function */
sbi->s_hash_function = hash_function(s);
if (sbi->s_hash_function == NULL) {
dput(s->s_root);
@@ -1939,11 +2026,11 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
if (is_reiserfs_3_5(rs)
|| (is_reiserfs_jr(rs) && SB_VERSION(s) == REISERFS_VERSION_1))
- set_bit(REISERFS_3_5, &(sbi->s_properties));
+ set_bit(REISERFS_3_5, &sbi->s_properties);
else if (old_format)
- set_bit(REISERFS_OLD_FORMAT, &(sbi->s_properties));
+ set_bit(REISERFS_OLD_FORMAT, &sbi->s_properties);
else
- set_bit(REISERFS_3_6, &(sbi->s_properties));
+ set_bit(REISERFS_3_6, &sbi->s_properties);
if (!(s->s_flags & MS_RDONLY)) {
@@ -1958,10 +2045,12 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
set_sb_umount_state(rs, REISERFS_ERROR_FS);
set_sb_fs_state(rs, 0);
- /* Clear out s_bmap_nr if it would wrap. We can handle this
+ /*
+ * Clear out s_bmap_nr if it would wrap. We can handle this
* case, but older revisions can't. This will cause the
* file system to fail mount on those older implementations,
- * avoiding corruption. -jeffm */
+ * avoiding corruption. -jeffm
+ */
if (bmap_would_wrap(reiserfs_bmap_count(s)) &&
sb_bmap_nr(rs) != 0) {
reiserfs_warning(s, "super-2030", "This file system "
@@ -1974,8 +2063,10 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
}
if (old_format_only(s)) {
- /* filesystem of format 3.5 either with standard or non-standard
- journal */
+ /*
+ * filesystem of format 3.5 either with standard
+ * or non-standard journal
+ */
if (convert_reiserfs(s)) {
/* and -o conv is given */
if (!silent)
@@ -1983,8 +2074,11 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
"converting 3.5 filesystem to the 3.6 format");
if (is_reiserfs_3_5(rs))
- /* put magic string of 3.6 format. 2.2 will not be able to
- mount this filesystem anymore */
+ /*
+ * put magic string of 3.6 format.
+ * 2.2 will not be able to
+ * mount this filesystem anymore
+ */
memcpy(rs->s_v1.s_magic,
reiserfs_3_6_magic_string,
sizeof
@@ -1992,8 +2086,8 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
set_sb_version(rs, REISERFS_VERSION_2);
reiserfs_convert_objectid_map_v1(s);
- set_bit(REISERFS_3_6, &(sbi->s_properties));
- clear_bit(REISERFS_3_5, &(sbi->s_properties));
+ set_bit(REISERFS_3_6, &sbi->s_properties);
+ clear_bit(REISERFS_3_5, &sbi->s_properties);
} else if (!silent) {
reiserfs_info(s, "using 3.5.x disk format\n");
}
@@ -2001,8 +2095,8 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
set_sb_mnt_count(rs, sb_mnt_count(rs) + 1);
- journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s));
- errval = journal_end(&th, s, 1);
+ journal_mark_dirty(&th, SB_BUFFER_WITH_SB(s));
+ errval = journal_end(&th);
if (errval) {
dput(s->s_root);
s->s_root = NULL;
@@ -2018,7 +2112,9 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
}
reiserfs_write_lock(s);
- /* look for files which were to be removed in previous session */
+ /*
+ * look for files which were to be removed in previous session
+ */
finish_unfinished(s);
} else {
if (old_format_only(s) && !silent) {
@@ -2034,7 +2130,9 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
}
reiserfs_write_lock(s);
}
- // mark hash in super block: it could be unset. overwrite should be ok
+ /*
+ * mark hash in super block: it could be unset. overwrite should be ok
+ */
set_sb_hash_function_code(rs, function2code(sbi->s_hash_function));
handle_attrs(s);
@@ -2111,9 +2209,7 @@ static int reiserfs_write_dquot(struct dquot *dquot)
depth = reiserfs_write_unlock_nested(dquot->dq_sb);
ret = dquot_commit(dquot);
reiserfs_write_lock_nested(dquot->dq_sb, depth);
- err =
- journal_end(&th, dquot->dq_sb,
- REISERFS_QUOTA_TRANS_BLOCKS(dquot->dq_sb));
+ err = journal_end(&th);
if (!ret && err)
ret = err;
out:
@@ -2136,9 +2232,7 @@ static int reiserfs_acquire_dquot(struct dquot *dquot)
depth = reiserfs_write_unlock_nested(dquot->dq_sb);
ret = dquot_acquire(dquot);
reiserfs_write_lock_nested(dquot->dq_sb, depth);
- err =
- journal_end(&th, dquot->dq_sb,
- REISERFS_QUOTA_INIT_BLOCKS(dquot->dq_sb));
+ err = journal_end(&th);
if (!ret && err)
ret = err;
out:
@@ -2163,9 +2257,7 @@ static int reiserfs_release_dquot(struct dquot *dquot)
}
ret = dquot_release(dquot);
reiserfs_write_lock(dquot->dq_sb);
- err =
- journal_end(&th, dquot->dq_sb,
- REISERFS_QUOTA_DEL_BLOCKS(dquot->dq_sb));
+ err = journal_end(&th);
if (!ret && err)
ret = err;
reiserfs_write_unlock(dquot->dq_sb);
@@ -2198,7 +2290,7 @@ static int reiserfs_write_info(struct super_block *sb, int type)
depth = reiserfs_write_unlock_nested(sb);
ret = dquot_commit_info(sb, type);
reiserfs_write_lock_nested(sb, depth);
- err = journal_end(&th, sb, 2);
+ err = journal_end(&th);
if (!ret && err)
ret = err;
out:
@@ -2238,7 +2330,10 @@ static int reiserfs_quota_on(struct super_block *sb, int type, int format_id,
goto out;
}
inode = path->dentry->d_inode;
- /* We must not pack tails for quota files on reiserfs for quota IO to work */
+ /*
+ * We must not pack tails for quota files on reiserfs for quota
+ * IO to work
+ */
if (!(REISERFS_I(inode)->i_flags & i_nopack_mask)) {
err = reiserfs_unpack(inode, NULL);
if (err) {
@@ -2268,7 +2363,7 @@ static int reiserfs_quota_on(struct super_block *sb, int type, int format_id,
err = journal_begin(&th, sb, 1);
if (err)
goto out;
- err = journal_end_sync(&th, sb, 1);
+ err = journal_end_sync(&th);
if (err)
goto out;
}
@@ -2279,10 +2374,12 @@ out:
return err;
}
-/* Read data from quotafile - avoid pagecache and such because we cannot afford
+/*
+ * Read data from quotafile - avoid pagecache and such because we cannot afford
* acquiring the locks... As quota files are never truncated and quota code
* itself serializes the operations (and no one else should touch the files)
- * we don't have to be afraid of races */
+ * we don't have to be afraid of races
+ */
static ssize_t reiserfs_quota_read(struct super_block *sb, int type, char *data,
size_t len, loff_t off)
{
@@ -2303,7 +2400,10 @@ static ssize_t reiserfs_quota_read(struct super_block *sb, int type, char *data,
sb->s_blocksize - offset <
toread ? sb->s_blocksize - offset : toread;
tmp_bh.b_state = 0;
- /* Quota files are without tails so we can safely use this function */
+ /*
+ * Quota files are without tails so we can safely
+ * use this function
+ */
reiserfs_write_lock(sb);
err = reiserfs_get_block(inode, blk, &tmp_bh, 0);
reiserfs_write_unlock(sb);
@@ -2326,8 +2426,10 @@ static ssize_t reiserfs_quota_read(struct super_block *sb, int type, char *data,
return len;
}
-/* Write to quotafile (we know the transaction is already started and has
- * enough credits) */
+/*
+ * Write to quotafile (we know the transaction is already started and has
+ * enough credits)
+ */
static ssize_t reiserfs_quota_write(struct super_block *sb, int type,
const char *data, size_t len, loff_t off)
{
@@ -2368,7 +2470,7 @@ static ssize_t reiserfs_quota_write(struct super_block *sb, int type,
unlock_buffer(bh);
reiserfs_write_lock(sb);
reiserfs_prepare_for_journal(sb, bh, 1);
- journal_mark_dirty(current->journal_info, sb, bh);
+ journal_mark_dirty(current->journal_info, bh);
if (!journal_quota)
reiserfs_add_ordered_list(inode, bh);
reiserfs_write_unlock(sb);
@@ -2402,18 +2504,18 @@ static int __init init_reiserfs_fs(void)
{
int ret;
- if ((ret = init_inodecache())) {
+ ret = init_inodecache();
+ if (ret)
return ret;
- }
reiserfs_proc_info_global_init();
ret = register_filesystem(&reiserfs_fs_type);
+ if (ret)
+ goto out;
- if (ret == 0) {
- return 0;
- }
-
+ return 0;
+out:
reiserfs_proc_info_global_done();
destroy_inodecache();
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-28 02:49:11 +0300