You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

Theodore Ts'o 9d0be50230 ext4: Calculate metadata requirements more accurately ... In the past, ext4_calc_metadata_amount(), and its sub-functions ext4_ext_calc_metadata_amount() and ext4_indirect_calc_metadata_amount() badly over-estimated the number of metadata blocks that might be required for delayed allocation blocks. This didn't matter as much when functions which managed the reserved metadata blocks were more aggressive about dropping reserved metadata blocks as delayed allocation blocks were written, but unfortunately they were too aggressive. This was fixed in commit 0637c6f, but as a result the over-estimation by ext4_calc_metadata_amount() would lead to reserving 2-3 times the number of pending delayed allocation blocks as potentially required metadata blocks. So if there are 1 megabytes of blocks which have been not yet been allocation, up to 3 megabytes of space would get reserved out of the user's quota and from the file system free space pool until all of the inode's data blocks have been allocated. This commit addresses this problem by much more accurately estimating the number of metadata blocks that will be required. It will still somewhat over-estimate the number of blocks needed, since it must make a worst case estimate not knowing which physical blocks will be needed, but it is much more accurate than before. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>		15 years ago
..
Kconfig	ext4: Don't ask about supporting ext2/3 in ext4 if ext4 is not configured	15 years ago
Makefile	ext4: online defrag -- Add EXT4_IOC_MOVE_EXT ioctl	16 years ago
acl.c	sanitize xattr handler prototypes	15 years ago
acl.h	ext[234]: move over to 'check_acl' permission model	16 years ago
balloc.c	ext4: fold ext4_free_blocks() and ext4_mb_free_blocks()	15 years ago
bitmap.c	…
block_validity.c	ext4: remove unused #include <linux/version.h>	15 years ago
dir.c	ext4: Define a new set of flags for ext4_get_blocks()	16 years ago
ext4.h	ext4: Calculate metadata requirements more accurately	15 years ago
ext4_extents.h	ext4: Calculate metadata requirements more accurately	15 years ago
ext4_jbd2.c	ext4: fold ext4_journal_forget() into ext4_forget()	15 years ago
ext4_jbd2.h	ext4: Wait for proper transaction commit on fsync	15 years ago
extents.c	ext4: Calculate metadata requirements more accurately	15 years ago
file.c	const: mark struct vm_struct_operations	16 years ago
fsync.c	ext4, jbd2: Add barriers for file systems with exernal journals	15 years ago
hash.c	…
ialloc.c	ext4: fix build warning when EXT4FS_DEBUG is on	16 years ago
inode.c	ext4: Calculate metadata requirements more accurately	15 years ago
ioctl.c	ext4: Fix insufficient checks in EXT4_IOC_MOVE_EXT	15 years ago
mballoc.c	ext4: Fix potential quota deadlock	15 years ago
mballoc.h	ext4: remove unused #include <linux/version.h>	15 years ago
migrate.c	ext4: quota macros cleanup	15 years ago
move_extent.c	ext4: Fix insufficient checks in EXT4_IOC_MOVE_EXT	15 years ago
namei.c	ext4: quota macros cleanup	15 years ago
resize.c	ext4: Return the PTR_ERR of the correct pointer in setup_new_group_blocks()	15 years ago
super.c	ext4: Calculate metadata requirements more accurately	15 years ago
symlink.c	…
xattr.c	ext4: Eliminate potential double free on error path	15 years ago
xattr.h	…
xattr_security.c	sanitize xattr handler prototypes	15 years ago
xattr_trusted.c	sanitize xattr handler prototypes	15 years ago
xattr_user.c	sanitize xattr handler prototypes	15 years ago