introduce vrele2(), which allows to release vnodes the way lfs
sometimes wants it:
+ without calling inactive
+ inserting the vnode at the head of the freelist (this is a very
questionable optimization that isn't even enabled by default,
but I went along with the same semantics for now)
knew what it was supposed to be used for and wrstuden gave a go-ahead
* while rototilling, convert file systems which went easily to
use VFS_PROTOS() instead of manually prototyping the methods
- Always call dqsync() with dq locked.
- Add some assertions to verify the lock held.
- Serialize quotaon()/quotaoff(), dqhashmtx becomes dqlock. From ad@
Reviewed by: Andrew Doran <ad@netbsd.org>
need to understand the locking around that field. Instead of setting
B_ERROR, set b_error instead. b_error is 'owned' by whoever completes
the I/O request.
- Replace DQ_LOCK/DQ_WANT/sleep/wakeup with a mutex `dq_interlock'. Use this
mutex to protect all quota values and flags.
- Protect the hashtable with a mutex.
- Never update quotas for the quota files on the same file system. Prevents
a deadlock when dqsync() has to change the quota file's size (PR #13942).
Reviewed by: Andrew Doran <ad@netbsd.org>
Bill Stouder-Studenmund <wrstuden@netbsd.org>
WQ_PERCPU flag for workqueue and additional argument for workqueue_enqueue()
to assign a CPU might be used. Notes:
- For now, the list is used for workqueue_queue, which is non-optimal,
and will be changed with array, where index would be CPU ID.
- The data structures should be changed to be cache-friendly.
Reviewed by: <yamt>, <tech-kern>
fs code is a kernel buffer, pass though the length of the buffer as well.
Since the length of the userspace buffer isn'it (yet) passed through the mount
system call, add a field to the vfsops structure containing the default length.
Split sys_mount() for calls from compat code.
Ride one of the recent kernel version changes - old fs LKMs will load, but
sys_mount() will reject any attempt to use them.
- Make quota-internal functions static.
- Clean up declarations in quota.h and ufs_extern.h. quota.h now has the
description of quota criterions, on-disk structure, user-kernel interface and
declaration of init/done functions. All ufs quota related function
prototypes go to ufs_extern.h.
- New functions ufsquota_init() and ufsquota_free() create or destroy the
quota fields of `struct inode'.
- chkdq() and chkiq() always update the quota fields of `struct inode' first.
- Only ufs_access() explicitely calls getinoquota().
No objections on tech-kern@
an init method. So get rid of it and #ifdef _LKM and just always
init in the init method. Give malloc types the same treatment.
Makes file systems nicer to work with in linksetless environments
and fixes a few LKM discrepancies.
the reference counter of the corresponding struct dquot will overflow.
Change the type of the reference counter from u_int16_t to u_int32_t and
add an assertion to check for overflow.
Observed and tested by Edgar Fuß.
Welcome to 4.99.21 (struct dquot and therefore struct inode changed layout)
Adjust fs->fs_maxfilesize instead of ump->um_maxfilesize
in ffs_oldfscompat_read() because the latter is overrided
by the former after ffs_oldfscompat_read() returned.
Fixes EFBIG errors on read(2) and "exec /sbin/init: error 8"
problem on mac68k after mountroot() on old 4.3BSD UFS created
by the Mkfs tool for MacOS (reported and confirmed on port-mac68k).
kern/36331 (MP deadlock between ufs_ihashget() and VOP_LOOKUP()) for ffs,
other file systems to follow. Reported by perseant@, debugged by Sverre
Froyen, patch posted/tested by Blair Sadewitz.
